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mips: ath79: Add AR934x support
Add support for the Atheros AR934x WiSoCs. This patchs adds complete system init, including PLL and DRAM init, both of which happen from full C environment, since the AR934x has proper SRAM. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Wills Wang <wills.wang@live.com>
This commit is contained in:
Marek Vasut
Daniel Schwierzeck
parent
4771bbee5d
commit
e08539b791
9 changed files with 683 additions and 1 deletions
112
arch/mips/dts/ar934x.dtsi
Normal file
112
arch/mips/dts/ar934x.dtsi
Normal file
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@ -0,0 +1,112 @@
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/*
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* Copyright (C) 2016 Marek Vasut <marex@denx.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include "skeleton.dtsi"
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/ {
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compatible = "qca,ar934x";
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#address-cells = <1>;
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#size-cells = <1>;
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cpus {
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#address-cells = <1>;
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#size-cells = <0>;
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cpu@0 {
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device_type = "cpu";
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compatible = "mips,mips74Kc";
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reg = <0>;
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};
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};
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clocks {
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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xtal: xtal {
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#clock-cells = <0>;
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compatible = "fixed-clock";
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clock-output-names = "xtal";
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};
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};
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ahb {
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compatible = "simple-bus";
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ranges;
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#address-cells = <1>;
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#size-cells = <1>;
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apb {
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compatible = "simple-bus";
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ranges;
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#address-cells = <1>;
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#size-cells = <1>;
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ehci0: ehci@1b000100 {
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compatible = "generic-ehci";
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reg = <0x1b000100 0x100>;
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status = "disabled";
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};
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uart0: uart@18020000 {
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compatible = "ns16550";
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reg = <0x18020000 0x20>;
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reg-shift = <2>;
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status = "disabled";
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};
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gmac0: eth@0x19000000 {
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compatible = "qca,ag934x-mac";
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reg = <0x19000000 0x200>;
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phy = <&phy0>;
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phy-mode = "rgmii";
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status = "disabled";
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mdio {
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#address-cells = <1>;
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#size-cells = <0>;
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phy0: ethernet-phy@0 {
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reg = <0>;
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};
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};
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};
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gmac1: eth@0x1a000000 {
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compatible = "qca,ag934x-mac";
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reg = <0x1a000000 0x200>;
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phy = <&phy1>;
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phy-mode = "rgmii";
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status = "disabled";
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mdio {
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#address-cells = <1>;
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#size-cells = <0>;
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phy1: ethernet-phy@0 {
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reg = <0>;
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};
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};
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};
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};
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spi0: spi@1f000000 {
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compatible = "qca,ar7100-spi";
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reg = <0x1f000000 0x10>;
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status = "disabled";
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#address-cells = <1>;
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#size-cells = <0>;
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};
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};
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};
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@ -13,6 +13,15 @@ config SOC_AR933X
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help
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This supports QCA/Atheros ar933x family SOCs.
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config SOC_AR934X
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bool
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select SUPPORTS_BIG_ENDIAN
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select SUPPORTS_CPU_MIPS32_R1
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select SUPPORTS_CPU_MIPS32_R2
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select MIPS_TUNE_74KC
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help
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This supports QCA/Atheros ar934x family SOCs.
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config SOC_QCA953X
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bool
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select SUPPORTS_BIG_ENDIAN
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@ -7,4 +7,5 @@ obj-y += cpu.o
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obj-y += dram.o
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obj-$(CONFIG_SOC_AR933X) += ar933x/
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obj-$(CONFIG_SOC_QCA953X) += qca953x/
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obj-$(CONFIG_SOC_AR934X) += ar934x/
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obj-$(CONFIG_SOC_QCA953X) += qca953x/
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7
arch/mips/mach-ath79/ar934x/Makefile
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7
arch/mips/mach-ath79/ar934x/Makefile
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@ -0,0 +1,7 @@
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#
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# SPDX-License-Identifier: GPL-2.0+
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#
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obj-y += cpu.o
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obj-y += clk.o
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obj-y += ddr.o
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334
arch/mips/mach-ath79/ar934x/clk.c
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334
arch/mips/mach-ath79/ar934x/clk.c
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@ -0,0 +1,334 @@
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/*
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* Copyright (C) 2016 Marek Vasut <marex@denx.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/addrspace.h>
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#include <asm/types.h>
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#include <mach/ar71xx_regs.h>
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#include <mach/reset.h>
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#include <wait_bit.h>
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* The math for calculating PLL:
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* NFRAC * 2^8
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* NINT + -------------
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* XTAL [MHz] 2^(18 - 1)
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* PLL [MHz] = ------------ * ----------------------
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* REFDIV 2^OUTDIV
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*
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* Unfortunatelly, there is no way to reliably compute the variables.
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* The vendor U-Boot port contains macros for various combinations of
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* CPU PLL / DDR PLL / AHB bus speed and there is no obvious pattern
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* in those numbers.
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*/
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struct ar934x_pll_config {
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u8 range;
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u8 refdiv;
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u8 outdiv;
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/* Index 0 is for XTAL=25MHz , Index 1 is for XTAL=40MHz */
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u8 nint[2];
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};
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struct ar934x_clock_config {
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u16 cpu_freq;
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u16 ddr_freq;
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u16 ahb_freq;
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struct ar934x_pll_config cpu_pll;
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struct ar934x_pll_config ddr_pll;
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};
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static const struct ar934x_clock_config ar934x_clock_config[] = {
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{ 300, 300, 150, { 1, 1, 1, { 24, 15 } }, { 1, 1, 1, { 24, 15 } } },
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{ 400, 200, 200, { 1, 1, 1, { 32, 20 } }, { 1, 1, 2, { 32, 20 } } },
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{ 400, 400, 200, { 0, 1, 1, { 32, 20 } }, { 0, 1, 1, { 32, 20 } } },
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{ 500, 400, 200, { 1, 1, 0, { 20, 12 } }, { 0, 1, 1, { 32, 20 } } },
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{ 533, 400, 200, { 1, 1, 0, { 21, 13 } }, { 0, 1, 1, { 32, 20 } } },
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{ 533, 500, 250, { 1, 1, 0, { 21, 13 } }, { 0, 1, 0, { 20, 12 } } },
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{ 560, 480, 240, { 1, 1, 0, { 22, 14 } }, { 1, 1, 0, { 19, 12 } } },
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{ 566, 400, 200, { 1, 1, 0, { 22, 14 } }, { 1, 1, 0, { 16, 10 } } },
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{ 566, 450, 225, { 1, 1, 0, { 22, 14 } }, { 0, 1, 1, { 36, 22 } } },
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{ 566, 475, 237, { 1, 1, 0, { 22, 14 } }, { 1, 1, 0, { 19, 11 } } },
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{ 566, 500, 250, { 1, 1, 0, { 22, 14 } }, { 1, 1, 0, { 20, 12 } } },
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{ 566, 525, 262, { 1, 1, 0, { 22, 14 } }, { 1, 1, 0, { 21, 13 } } },
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{ 566, 550, 275, { 1, 1, 0, { 22, 14 } }, { 1, 1, 0, { 22, 13 } } },
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{ 600, 266, 133, { 0, 1, 0, { 24, 15 } }, { 1, 1, 1, { 21, 16 } } },
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{ 600, 266, 200, { 0, 1, 0, { 24, 15 } }, { 1, 1, 1, { 21, 16 } } },
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{ 600, 300, 150, { 0, 1, 0, { 24, 15 } }, { 0, 1, 1, { 24, 15 } } },
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{ 600, 332, 166, { 0, 1, 0, { 24, 15 } }, { 1, 1, 1, { 26, 16 } } },
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{ 600, 332, 200, { 0, 1, 0, { 24, 15 } }, { 1, 1, 1, { 26, 16 } } },
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{ 600, 400, 200, { 0, 1, 0, { 24, 15 } }, { 0, 1, 1, { 32, 20 } } },
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{ 600, 450, 200, { 0, 1, 0, { 24, 15 } }, { 0, 1, 0, { 18, 20 } } },
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{ 600, 500, 250, { 0, 1, 0, { 24, 15 } }, { 1, 1, 0, { 20, 12 } } },
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{ 600, 525, 262, { 0, 1, 0, { 24, 15 } }, { 0, 1, 0, { 21, 20 } } },
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{ 600, 550, 275, { 0, 1, 0, { 24, 15 } }, { 0, 1, 0, { 22, 20 } } },
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{ 600, 575, 287, { 0, 1, 0, { 24, 15 } }, { 0, 1, 0, { 23, 14 } } },
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{ 600, 600, 300, { 0, 1, 0, { 24, 15 } }, { 0, 1, 0, { 24, 20 } } },
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{ 600, 650, 325, { 0, 1, 0, { 24, 15 } }, { 0, 1, 0, { 26, 20 } } },
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{ 650, 600, 300, { 0, 1, 0, { 26, 15 } }, { 0, 1, 0, { 24, 20 } } },
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{ 700, 400, 200, { 3, 1, 0, { 28, 17 } }, { 0, 1, 1, { 32, 20 } } },
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};
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static void ar934x_srif_pll_cfg(void __iomem *pll_reg_base, const u32 srif_val)
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{
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u32 reg;
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do {
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writel(0x10810f00, pll_reg_base + 0x4);
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writel(srif_val, pll_reg_base + 0x0);
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writel(0xd0810f00, pll_reg_base + 0x4);
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writel(0x03000000, pll_reg_base + 0x8);
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writel(0xd0800f00, pll_reg_base + 0x4);
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clrbits_be32(pll_reg_base + 0x8, BIT(30));
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udelay(5);
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setbits_be32(pll_reg_base + 0x8, BIT(30));
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udelay(5);
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wait_for_bit("clk", pll_reg_base + 0xc, BIT(3), 1, 10, 0);
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clrbits_be32(pll_reg_base + 0x8, BIT(30));
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udelay(5);
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/* Check if CPU SRIF PLL locked. */
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reg = readl(pll_reg_base + 0x8);
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reg = (reg & 0x7ffff8) >> 3;
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} while (reg >= 0x40000);
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}
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void ar934x_pll_init(const u16 cpu_mhz, const u16 ddr_mhz, const u16 ahb_mhz)
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{
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void __iomem *srif_regs = map_physmem(AR934X_SRIF_BASE,
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AR934X_SRIF_SIZE, MAP_NOCACHE);
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void __iomem *pll_regs = map_physmem(AR71XX_PLL_BASE,
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AR71XX_PLL_SIZE, MAP_NOCACHE);
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const struct ar934x_pll_config *pll_cfg;
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int i, pll_nint, pll_refdiv, xtal_40 = 0;
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u32 reg, cpu_pll, cpu_srif, ddr_pll, ddr_srif;
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/* Configure SRIF PLL with initial values. */
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writel(0x13210f00, srif_regs + AR934X_SRIF_CPU_DPLL2_REG);
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writel(0x03000000, srif_regs + AR934X_SRIF_CPU_DPLL3_REG);
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writel(0x13210f00, srif_regs + AR934X_SRIF_DDR_DPLL2_REG);
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writel(0x03000000, srif_regs + AR934X_SRIF_DDR_DPLL3_REG);
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writel(0x03000000, srif_regs + 0x188); /* Undocumented reg :-) */
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/* Test for 40MHz XTAL */
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reg = get_bootstrap();
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if (reg & AR934X_BOOTSTRAP_REF_CLK_40) {
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xtal_40 = 1;
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cpu_srif = 0x41c00000;
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ddr_srif = 0x41680000;
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} else {
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xtal_40 = 0;
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cpu_srif = 0x29c00000;
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ddr_srif = 0x29680000;
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}
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/* Locate CPU/DDR PLL configuration */
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for (i = 0; i < ARRAY_SIZE(ar934x_clock_config); i++) {
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if (cpu_mhz != ar934x_clock_config[i].cpu_freq)
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continue;
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if (ddr_mhz != ar934x_clock_config[i].ddr_freq)
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continue;
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if (ahb_mhz != ar934x_clock_config[i].ahb_freq)
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continue;
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/* Entry found */
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pll_cfg = &ar934x_clock_config[i].cpu_pll;
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pll_nint = pll_cfg->nint[xtal_40];
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pll_refdiv = pll_cfg->refdiv;
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cpu_pll =
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(pll_nint << AR934X_PLL_CPU_CONFIG_NINT_SHIFT) |
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(pll_refdiv << AR934X_PLL_CPU_CONFIG_REFDIV_SHIFT) |
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(pll_cfg->range << AR934X_PLL_CPU_CONFIG_RANGE_SHIFT) |
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(pll_cfg->outdiv << AR934X_PLL_CPU_CONFIG_OUTDIV_SHIFT);
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pll_cfg = &ar934x_clock_config[i].ddr_pll;
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pll_nint = pll_cfg->nint[xtal_40];
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pll_refdiv = pll_cfg->refdiv;
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ddr_pll =
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(pll_nint << AR934X_PLL_DDR_CONFIG_NINT_SHIFT) |
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(pll_refdiv << AR934X_PLL_DDR_CONFIG_REFDIV_SHIFT) |
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(pll_cfg->range << AR934X_PLL_DDR_CONFIG_RANGE_SHIFT) |
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(pll_cfg->outdiv << AR934X_PLL_DDR_CONFIG_OUTDIV_SHIFT);
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break;
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}
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/* PLL configuration not found, hang. */
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if (i == ARRAY_SIZE(ar934x_clock_config))
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hang();
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/* Set PLL Bypass */
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setbits_be32(pll_regs + AR934X_PLL_CPU_DDR_CLK_CTRL_REG,
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AR934X_PLL_CLK_CTRL_CPU_PLL_BYPASS);
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setbits_be32(pll_regs + AR934X_PLL_CPU_DDR_CLK_CTRL_REG,
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AR934X_PLL_CLK_CTRL_DDR_PLL_BYPASS);
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setbits_be32(pll_regs + AR934X_PLL_CPU_DDR_CLK_CTRL_REG,
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AR934X_PLL_CLK_CTRL_AHB_PLL_BYPASS);
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/* Configure CPU PLL */
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writel(cpu_pll | AR934X_PLL_CPU_CONFIG_PLLPWD,
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pll_regs + AR934X_PLL_CPU_CONFIG_REG);
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/* Configure DDR PLL */
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writel(ddr_pll | AR934X_PLL_DDR_CONFIG_PLLPWD,
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pll_regs + AR934X_PLL_DDR_CONFIG_REG);
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/* Configure PLL routing */
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writel(AR934X_PLL_CLK_CTRL_CPU_PLL_BYPASS |
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AR934X_PLL_CLK_CTRL_DDR_PLL_BYPASS |
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AR934X_PLL_CLK_CTRL_AHB_PLL_BYPASS |
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(0 << AR934X_PLL_CLK_CTRL_CPU_POST_DIV_SHIFT) |
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(0 << AR934X_PLL_CLK_CTRL_DDR_POST_DIV_SHIFT) |
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(1 << AR934X_PLL_CLK_CTRL_AHB_POST_DIV_SHIFT) |
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AR934X_PLL_CLK_CTRL_CPUCLK_FROM_CPUPLL |
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AR934X_PLL_CLK_CTRL_DDRCLK_FROM_DDRPLL |
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AR934X_PLL_CLK_CTRL_AHBCLK_FROM_DDRPLL,
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pll_regs + AR934X_PLL_CPU_DDR_CLK_CTRL_REG);
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/* Configure SRIF PLLs, which is completely undocumented :-) */
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ar934x_srif_pll_cfg(srif_regs + AR934X_SRIF_CPU_DPLL1_REG, cpu_srif);
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ar934x_srif_pll_cfg(srif_regs + AR934X_SRIF_DDR_DPLL1_REG, ddr_srif);
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/* Unset PLL Bypass */
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clrbits_be32(pll_regs + AR934X_PLL_CPU_DDR_CLK_CTRL_REG,
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AR934X_PLL_CLK_CTRL_CPU_PLL_BYPASS);
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clrbits_be32(pll_regs + AR934X_PLL_CPU_DDR_CLK_CTRL_REG,
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AR934X_PLL_CLK_CTRL_DDR_PLL_BYPASS);
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clrbits_be32(pll_regs + AR934X_PLL_CPU_DDR_CLK_CTRL_REG,
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AR934X_PLL_CLK_CTRL_AHB_PLL_BYPASS);
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/* Enable PLL dithering */
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writel((1 << AR934X_PLL_DDR_DIT_FRAC_STEP_SHIFT) |
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(0xf << AR934X_PLL_DDR_DIT_UPD_CNT_SHIFT),
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pll_regs + AR934X_PLL_DDR_DIT_FRAC_REG);
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writel(48 << AR934X_PLL_CPU_DIT_UPD_CNT_SHIFT,
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pll_regs + AR934X_PLL_CPU_DIT_FRAC_REG);
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}
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static u32 ar934x_get_xtal(void)
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{
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u32 val;
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val = get_bootstrap();
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if (val & AR934X_BOOTSTRAP_REF_CLK_40)
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return 40000000;
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else
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return 25000000;
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}
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int get_serial_clock(void)
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{
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return ar934x_get_xtal();
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}
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static u32 ar934x_cpupll_to_hz(const u32 regval)
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{
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const u32 outdiv = (regval >> AR934X_PLL_CPU_CONFIG_OUTDIV_SHIFT) &
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AR934X_PLL_CPU_CONFIG_OUTDIV_MASK;
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const u32 refdiv = (regval >> AR934X_PLL_CPU_CONFIG_REFDIV_SHIFT) &
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AR934X_PLL_CPU_CONFIG_REFDIV_MASK;
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const u32 nint = (regval >> AR934X_PLL_CPU_CONFIG_NINT_SHIFT) &
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AR934X_PLL_CPU_CONFIG_NINT_MASK;
|
||||
const u32 nfrac = (regval >> AR934X_PLL_CPU_CONFIG_NFRAC_SHIFT) &
|
||||
AR934X_PLL_CPU_CONFIG_NFRAC_MASK;
|
||||
const u32 xtal = ar934x_get_xtal();
|
||||
|
||||
return (xtal * (nint + (nfrac >> 9))) / (refdiv * (1 << outdiv));
|
||||
}
|
||||
|
||||
static u32 ar934x_ddrpll_to_hz(const u32 regval)
|
||||
{
|
||||
const u32 outdiv = (regval >> AR934X_PLL_DDR_CONFIG_OUTDIV_SHIFT) &
|
||||
AR934X_PLL_DDR_CONFIG_OUTDIV_MASK;
|
||||
const u32 refdiv = (regval >> AR934X_PLL_DDR_CONFIG_REFDIV_SHIFT) &
|
||||
AR934X_PLL_DDR_CONFIG_REFDIV_MASK;
|
||||
const u32 nint = (regval >> AR934X_PLL_DDR_CONFIG_NINT_SHIFT) &
|
||||
AR934X_PLL_DDR_CONFIG_NINT_MASK;
|
||||
const u32 nfrac = (regval >> AR934X_PLL_DDR_CONFIG_NFRAC_SHIFT) &
|
||||
AR934X_PLL_DDR_CONFIG_NFRAC_MASK;
|
||||
const u32 xtal = ar934x_get_xtal();
|
||||
|
||||
return (xtal * (nint + (nfrac >> 9))) / (refdiv * (1 << outdiv));
|
||||
}
|
||||
|
||||
static void ar934x_update_clock(void)
|
||||
{
|
||||
void __iomem *regs;
|
||||
u32 ctrl, cpu, cpupll, ddr, ddrpll;
|
||||
u32 cpudiv, ddrdiv, busdiv;
|
||||
u32 cpuclk, ddrclk, busclk;
|
||||
|
||||
regs = map_physmem(AR71XX_PLL_BASE, AR71XX_PLL_SIZE,
|
||||
MAP_NOCACHE);
|
||||
|
||||
cpu = readl(regs + AR934X_PLL_CPU_CONFIG_REG);
|
||||
ddr = readl(regs + AR934X_PLL_DDR_CONFIG_REG);
|
||||
ctrl = readl(regs + AR934X_PLL_CPU_DDR_CLK_CTRL_REG);
|
||||
|
||||
cpupll = ar934x_cpupll_to_hz(cpu);
|
||||
ddrpll = ar934x_ddrpll_to_hz(ddr);
|
||||
|
||||
if (ctrl & AR934X_PLL_CLK_CTRL_CPU_PLL_BYPASS)
|
||||
cpuclk = ar934x_get_xtal();
|
||||
else if (ctrl & AR934X_PLL_CLK_CTRL_CPUCLK_FROM_CPUPLL)
|
||||
cpuclk = cpupll;
|
||||
else
|
||||
cpuclk = ddrpll;
|
||||
|
||||
if (ctrl & AR934X_PLL_CLK_CTRL_DDR_PLL_BYPASS)
|
||||
ddrclk = ar934x_get_xtal();
|
||||
else if (ctrl & AR934X_PLL_CLK_CTRL_DDRCLK_FROM_DDRPLL)
|
||||
ddrclk = ddrpll;
|
||||
else
|
||||
ddrclk = cpupll;
|
||||
|
||||
if (ctrl & AR934X_PLL_CLK_CTRL_AHB_PLL_BYPASS)
|
||||
busclk = ar934x_get_xtal();
|
||||
else if (ctrl & AR934X_PLL_CLK_CTRL_AHBCLK_FROM_DDRPLL)
|
||||
busclk = ddrpll;
|
||||
else
|
||||
busclk = cpupll;
|
||||
|
||||
cpudiv = (ctrl >> AR934X_PLL_CLK_CTRL_CPU_POST_DIV_SHIFT) &
|
||||
AR934X_PLL_CLK_CTRL_CPU_POST_DIV_MASK;
|
||||
ddrdiv = (ctrl >> AR934X_PLL_CLK_CTRL_DDR_POST_DIV_SHIFT) &
|
||||
AR934X_PLL_CLK_CTRL_DDR_POST_DIV_MASK;
|
||||
busdiv = (ctrl >> AR934X_PLL_CLK_CTRL_AHB_POST_DIV_SHIFT) &
|
||||
AR934X_PLL_CLK_CTRL_AHB_POST_DIV_MASK;
|
||||
|
||||
gd->cpu_clk = cpuclk / (cpudiv + 1);
|
||||
gd->mem_clk = ddrclk / (ddrdiv + 1);
|
||||
gd->bus_clk = busclk / (busdiv + 1);
|
||||
}
|
||||
|
||||
ulong get_bus_freq(ulong dummy)
|
||||
{
|
||||
ar934x_update_clock();
|
||||
return gd->bus_clk;
|
||||
}
|
||||
|
||||
ulong get_ddr_freq(ulong dummy)
|
||||
{
|
||||
ar934x_update_clock();
|
||||
return gd->mem_clk;
|
||||
}
|
||||
|
||||
int do_ar934x_showclk(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
||||
{
|
||||
ar934x_update_clock();
|
||||
printf("CPU: %8ld MHz\n", gd->cpu_clk / 1000000);
|
||||
printf("Memory: %8ld MHz\n", gd->mem_clk / 1000000);
|
||||
printf("AHB: %8ld MHz\n", gd->bus_clk / 1000000);
|
||||
return 0;
|
||||
}
|
||||
|
||||
U_BOOT_CMD(
|
||||
clocks, CONFIG_SYS_MAXARGS, 1, do_ar934x_showclk,
|
||||
"display clocks",
|
||||
""
|
||||
);
|
||||
10
arch/mips/mach-ath79/ar934x/cpu.c
Normal file
10
arch/mips/mach-ath79/ar934x/cpu.c
Normal file
|
|
@ -0,0 +1,10 @@
|
|||
/*
|
||||
* Copyright (C) 2016 Marek Vasut <marex@denx.de>
|
||||
*
|
||||
* SPDX-License-Identifier: GPL-2.0+
|
||||
*/
|
||||
|
||||
#include <common.h>
|
||||
|
||||
/* The lowlevel_init() is not needed on AR934x */
|
||||
void lowlevel_init(void) {}
|
||||
163
arch/mips/mach-ath79/ar934x/ddr.c
Normal file
163
arch/mips/mach-ath79/ar934x/ddr.c
Normal file
|
|
@ -0,0 +1,163 @@
|
|||
/*
|
||||
* Copyright (C) 2016 Marek Vasut <marex@denx.de>
|
||||
*
|
||||
* Based on RAM init sequence by Piotr Dymacz <pepe2k@gmail.com>
|
||||
*
|
||||
* SPDX-License-Identifier: GPL-2.0+
|
||||
*/
|
||||
|
||||
#include <common.h>
|
||||
#include <asm/io.h>
|
||||
#include <asm/addrspace.h>
|
||||
#include <asm/types.h>
|
||||
#include <mach/ar71xx_regs.h>
|
||||
#include <mach/reset.h>
|
||||
|
||||
DECLARE_GLOBAL_DATA_PTR;
|
||||
|
||||
enum {
|
||||
AR934X_SDRAM = 0,
|
||||
AR934X_DDR1,
|
||||
AR934X_DDR2,
|
||||
};
|
||||
|
||||
struct ar934x_mem_config {
|
||||
u32 config1;
|
||||
u32 config2;
|
||||
u32 mode;
|
||||
u32 extmode;
|
||||
u32 tap;
|
||||
};
|
||||
|
||||
static const struct ar934x_mem_config ar934x_mem_config[] = {
|
||||
[AR934X_SDRAM] = { 0x7fbe8cd0, 0x959f66a8, 0x33, 0, 0x1f1f },
|
||||
[AR934X_DDR1] = { 0x7fd48cd0, 0x99d0e6a8, 0x33, 0, 0x14 },
|
||||
[AR934X_DDR2] = { 0xc7d48cd0, 0x9dd0e6a8, 0x33, 0, 0x10012 },
|
||||
};
|
||||
|
||||
void ar934x_ddr_init(const u16 cpu_mhz, const u16 ddr_mhz, const u16 ahb_mhz)
|
||||
{
|
||||
void __iomem *ddr_regs;
|
||||
const struct ar934x_mem_config *memcfg;
|
||||
int memtype;
|
||||
u32 reg, cycle, ctl;
|
||||
|
||||
ddr_regs = map_physmem(AR71XX_DDR_CTRL_BASE, AR71XX_DDR_CTRL_SIZE,
|
||||
MAP_NOCACHE);
|
||||
|
||||
reg = get_bootstrap();
|
||||
if (reg & AR934X_BOOTSTRAP_SDRAM_DISABLED) { /* DDR */
|
||||
if (reg & AR934X_BOOTSTRAP_DDR1) { /* DDR 1 */
|
||||
memtype = AR934X_DDR1;
|
||||
cycle = 0xffff;
|
||||
} else { /* DDR 2 */
|
||||
memtype = AR934X_DDR2;
|
||||
if (gd->arch.rev) {
|
||||
ctl = BIT(6); /* Undocumented bit :-( */
|
||||
if (reg & BIT(3))
|
||||
cycle = 0xff;
|
||||
else
|
||||
cycle = 0xffff;
|
||||
} else {
|
||||
/* Force DDR2/x16 configuratio on old chips. */
|
||||
ctl = 0;
|
||||
cycle = 0xffff; /* DDR2 16bit */
|
||||
}
|
||||
|
||||
writel(0xe59, ddr_regs + AR934X_DDR_REG_DDR2_CONFIG);
|
||||
udelay(100);
|
||||
|
||||
writel(0x10, ddr_regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(10);
|
||||
|
||||
writel(0x20, ddr_regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(10);
|
||||
|
||||
writel(ctl, ddr_regs + AR934X_DDR_REG_CTL_CONF);
|
||||
udelay(10);
|
||||
}
|
||||
} else { /* SDRAM */
|
||||
memtype = AR934X_SDRAM;
|
||||
cycle = 0xffffffff;
|
||||
|
||||
writel(0x13b, ddr_regs + AR934X_DDR_REG_CTL_CONF);
|
||||
udelay(100);
|
||||
|
||||
/* Undocumented register */
|
||||
writel(0x13b, ddr_regs + 0x118);
|
||||
udelay(100);
|
||||
}
|
||||
|
||||
memcfg = &ar934x_mem_config[memtype];
|
||||
|
||||
writel(memcfg->config1, ddr_regs + AR71XX_DDR_REG_CONFIG);
|
||||
udelay(100);
|
||||
|
||||
writel(memcfg->config2, ddr_regs + AR71XX_DDR_REG_CONFIG2);
|
||||
udelay(100);
|
||||
|
||||
writel(0x8, ddr_regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(10);
|
||||
|
||||
writel(memcfg->mode | 0x100, ddr_regs + AR71XX_DDR_REG_MODE);
|
||||
mdelay(1);
|
||||
|
||||
writel(0x1, ddr_regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(10);
|
||||
|
||||
if (memtype == AR934X_DDR2) {
|
||||
writel(memcfg->mode | 0x100, ddr_regs + AR71XX_DDR_REG_EMR);
|
||||
udelay(100);
|
||||
|
||||
writel(0x2, ddr_regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(10);
|
||||
}
|
||||
|
||||
if (memtype != AR934X_SDRAM)
|
||||
writel(0x402, ddr_regs + AR71XX_DDR_REG_EMR);
|
||||
|
||||
udelay(100);
|
||||
|
||||
writel(0x2, ddr_regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(10);
|
||||
|
||||
writel(0x8, ddr_regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(10);
|
||||
|
||||
writel(memcfg->mode, ddr_regs + AR71XX_DDR_REG_MODE);
|
||||
udelay(100);
|
||||
|
||||
writel(0x1, ddr_regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(10);
|
||||
|
||||
writel(0x412c /* FIXME */, ddr_regs + AR71XX_DDR_REG_REFRESH);
|
||||
udelay(100);
|
||||
|
||||
writel(memcfg->tap, ddr_regs + AR71XX_DDR_REG_TAP_CTRL0);
|
||||
writel(memcfg->tap, ddr_regs + AR71XX_DDR_REG_TAP_CTRL1);
|
||||
|
||||
if (memtype != AR934X_SDRAM) {
|
||||
if ((gd->arch.rev && (reg & BIT(3))) || !gd->arch.rev) {
|
||||
writel(memcfg->tap,
|
||||
ddr_regs + AR934X_DDR_REG_TAP_CTRL2);
|
||||
writel(memcfg->tap,
|
||||
ddr_regs + AR934X_DDR_REG_TAP_CTRL3);
|
||||
}
|
||||
}
|
||||
|
||||
writel(cycle, ddr_regs + AR71XX_DDR_REG_RD_CYCLE);
|
||||
udelay(100);
|
||||
|
||||
writel(0x74444444, ddr_regs + AR934X_DDR_REG_BURST);
|
||||
udelay(100);
|
||||
|
||||
writel(0x222, ddr_regs + AR934X_DDR_REG_BURST2);
|
||||
udelay(100);
|
||||
|
||||
writel(0xfffff, ddr_regs + AR934X_DDR_REG_TIMEOUT_MAX);
|
||||
udelay(100);
|
||||
}
|
||||
|
||||
void ddr_tap_tuning(void)
|
||||
{
|
||||
}
|
||||
|
|
@ -250,11 +250,22 @@
|
|||
#define AR933X_DDR_REG_TIMEOUT_CNT 0x9c
|
||||
#define AR933X_DDR_REG_TIMEOUT_ADDR 0x9c
|
||||
|
||||
#define AR934X_DDR_REG_TAP_CTRL2 0x24
|
||||
#define AR934X_DDR_REG_TAP_CTRL3 0x28
|
||||
#define AR934X_DDR_REG_FLUSH_GE0 0x9c
|
||||
#define AR934X_DDR_REG_FLUSH_GE1 0xa0
|
||||
#define AR934X_DDR_REG_FLUSH_USB 0xa4
|
||||
#define AR934X_DDR_REG_FLUSH_PCIE 0xa8
|
||||
#define AR934X_DDR_REG_FLUSH_WMAC 0xac
|
||||
#define AR934X_DDR_REG_FLUSH_SRC1 0xb0
|
||||
#define AR934X_DDR_REG_FLUSH_SRC2 0xb4
|
||||
#define AR934X_DDR_REG_DDR2_CONFIG 0xb8
|
||||
#define AR934X_DDR_REG_EMR2 0xbc
|
||||
#define AR934X_DDR_REG_EMR3 0xc0
|
||||
#define AR934X_DDR_REG_BURST 0xc4
|
||||
#define AR934X_DDR_REG_BURST2 0xc8
|
||||
#define AR934X_DDR_REG_TIMEOUT_MAX 0xcc
|
||||
#define AR934X_DDR_REG_CTL_CONF 0x108
|
||||
|
||||
#define QCA953X_DDR_REG_FLUSH_GE0 0x9c
|
||||
#define QCA953X_DDR_REG_FLUSH_GE1 0xa0
|
||||
|
|
@ -341,6 +352,8 @@
|
|||
#define AR934X_PLL_CPU_DDR_CLK_CTRL_REG 0x08
|
||||
#define AR934X_PLL_SWITCH_CLOCK_CONTROL_REG 0x24
|
||||
#define AR934X_PLL_ETH_XMII_CONTROL_REG 0x2c
|
||||
#define AR934X_PLL_DDR_DIT_FRAC_REG 0x44
|
||||
#define AR934X_PLL_CPU_DIT_FRAC_REG 0x48
|
||||
|
||||
#define AR934X_PLL_CPU_CONFIG_NFRAC_SHIFT 0
|
||||
#define AR934X_PLL_CPU_CONFIG_NFRAC_MASK 0x3f
|
||||
|
|
@ -348,8 +361,12 @@
|
|||
#define AR934X_PLL_CPU_CONFIG_NINT_MASK 0x3f
|
||||
#define AR934X_PLL_CPU_CONFIG_REFDIV_SHIFT 12
|
||||
#define AR934X_PLL_CPU_CONFIG_REFDIV_MASK 0x1f
|
||||
#define AR934X_PLL_CPU_CONFIG_RANGE_SHIFT 17
|
||||
#define AR934X_PLL_CPU_CONFIG_RANGE_MASK 0x3
|
||||
#define AR934X_PLL_CPU_CONFIG_OUTDIV_SHIFT 19
|
||||
#define AR934X_PLL_CPU_CONFIG_OUTDIV_MASK 0x3
|
||||
#define AR934X_PLL_CPU_CONFIG_PLLPWD BIT(30)
|
||||
#define AR934X_PLL_CPU_CONFIG_UPDATING BIT(31)
|
||||
|
||||
#define AR934X_PLL_DDR_CONFIG_NFRAC_SHIFT 0
|
||||
#define AR934X_PLL_DDR_CONFIG_NFRAC_MASK 0x3ff
|
||||
|
|
@ -357,8 +374,12 @@
|
|||
#define AR934X_PLL_DDR_CONFIG_NINT_MASK 0x3f
|
||||
#define AR934X_PLL_DDR_CONFIG_REFDIV_SHIFT 16
|
||||
#define AR934X_PLL_DDR_CONFIG_REFDIV_MASK 0x1f
|
||||
#define AR934X_PLL_DDR_CONFIG_RANGE_SHIFT 21
|
||||
#define AR934X_PLL_DDR_CONFIG_RANGE_MASK 0x3
|
||||
#define AR934X_PLL_DDR_CONFIG_OUTDIV_SHIFT 23
|
||||
#define AR934X_PLL_DDR_CONFIG_OUTDIV_MASK 0x7
|
||||
#define AR934X_PLL_DDR_CONFIG_PLLPWD BIT(30)
|
||||
#define AR934X_PLL_DDR_CONFIG_UPDATING BIT(31)
|
||||
|
||||
#define AR934X_PLL_CLK_CTRL_CPU_PLL_BYPASS BIT(2)
|
||||
#define AR934X_PLL_CLK_CTRL_DDR_PLL_BYPASS BIT(3)
|
||||
|
|
@ -375,6 +396,26 @@
|
|||
|
||||
#define AR934X_PLL_SWITCH_CLK_CTRL_MDIO_CLK_SEL BIT(6)
|
||||
|
||||
#define AR934X_PLL_DDR_DIT_FRAC_MAX_SHIFT 0
|
||||
#define AR934X_PLL_DDR_DIT_FRAC_MAX_MASK 0x3ff
|
||||
#define AR934X_PLL_DDR_DIT_FRAC_MIN_SHIFT 10
|
||||
#define AR934X_PLL_DDR_DIT_FRAC_MIN_MASK 0x3ff
|
||||
#define AR934X_PLL_DDR_DIT_FRAC_STEP_SHIFT 20
|
||||
#define AR934X_PLL_DDR_DIT_FRAC_STEP_MASK 0x3f
|
||||
#define AR934X_PLL_DDR_DIT_UPD_CNT_SHIFT 27
|
||||
#define AR934X_PLL_DDR_DIT_UPD_CNT_MASK 0x3f
|
||||
#define AR934X_PLL_DDR_DIT_DITHER_EN BIT(31)
|
||||
|
||||
#define AR934X_PLL_CPU_DIT_FRAC_MAX_SHIFT 0
|
||||
#define AR934X_PLL_CPU_DIT_FRAC_MAX_MASK 0x3f
|
||||
#define AR934X_PLL_CPU_DIT_FRAC_MIN_SHIFT 6
|
||||
#define AR934X_PLL_CPU_DIT_FRAC_MIN_MASK 0x3f
|
||||
#define AR934X_PLL_CPU_DIT_FRAC_STEP_SHIFT 12
|
||||
#define AR934X_PLL_CPU_DIT_FRAC_STEP_MASK 0x3f
|
||||
#define AR934X_PLL_CPU_DIT_UPD_CNT_SHIFT 18
|
||||
#define AR934X_PLL_CPU_DIT_UPD_CNT_MASK 0x3f
|
||||
#define AR934X_PLL_CPU_DIT_DITHER_EN BIT(31)
|
||||
|
||||
#define QCA953X_PLL_CPU_CONFIG_REG 0x00
|
||||
#define QCA953X_PLL_DDR_CONFIG_REG 0x04
|
||||
#define QCA953X_PLL_CLK_CTRL_REG 0x08
|
||||
|
|
@ -1081,10 +1122,12 @@
|
|||
#define AR934X_SRIF_CPU_DPLL1_REG 0x1c0
|
||||
#define AR934X_SRIF_CPU_DPLL2_REG 0x1c4
|
||||
#define AR934X_SRIF_CPU_DPLL3_REG 0x1c8
|
||||
#define AR934X_SRIF_CPU_DPLL4_REG 0x1cc
|
||||
|
||||
#define AR934X_SRIF_DDR_DPLL1_REG 0x240
|
||||
#define AR934X_SRIF_DDR_DPLL2_REG 0x244
|
||||
#define AR934X_SRIF_DDR_DPLL3_REG 0x248
|
||||
#define AR934X_SRIF_DDR_DPLL4_REG 0x24c
|
||||
|
||||
#define AR934X_SRIF_DPLL1_REFDIV_SHIFT 27
|
||||
#define AR934X_SRIF_DPLL1_REFDIV_MASK 0x1f
|
||||
|
|
|
|||
|
|
@ -143,4 +143,7 @@ static inline int soc_is_qca956x(void)
|
|||
int ath79_eth_reset(void);
|
||||
int ath79_usb_reset(void);
|
||||
|
||||
void ar934x_pll_init(const u16 cpu_mhz, const u16 ddr_mhz, const u16 ahb_mhz);
|
||||
void ar934x_ddr_init(const u16 cpu_mhz, const u16 ddr_mhz, const u16 ahb_mhz);
|
||||
|
||||
#endif /* __ASM_MACH_ATH79_H */
|
||||
|
|
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Reference in a new issue