mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-26 13:03:40 +00:00
c9678850bd
The DHCOM SoM has two options for supplying ETHRX clock to the DWMAC
block and PHY. Either (1) ETHCK_K generates 50 MHz clock on ETH_CLK
pad for the PHY and the same 50 MHz clock are fed back to ETHRX via
internal eth_clk_fb clock connection OR (2) ETH_CLK is not used at
all, MCO2 generates 50 MHz clock on MCO2 output pad for the PHY and
the same MCO2 clock are fed back into ETHRX via ETH_RX_CLK input pad
using external pad-to-pad connection.
Option (1) has two downsides. ETHCK_K is supplied directly from either
PLL3_Q or PLL4_P, hence the PLL output is limited to exactly 50 MHz and
since the same PLL output is also used to supply SDMMC blocks, the
performance of SD and eMMC access is affected. The second downside is
that using this option, the EMI of the SoM is higher.
Option (2) solves both of those problems, so implement it here. In this
case, the PLL4_P is no longer limited and can be operated faster, at
100 MHz, which improves SDMMC performance (read performance is improved
from ~41 MiB/s to ~57 MiB/s with dd if=/dev/mmcblk1 of=/dev/null bs=64M
count=1). The EMI interference also decreases.
Ported from Linux kernel commit
73ab99aad50cd ("ARM: dts: stm32: Switch DWMAC RMII clock to MCO2 on DHCOM")
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
372 lines
5.8 KiB
Text
372 lines
5.8 KiB
Text
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
|
|
/*
|
|
* Copyright (C) 2019 Marek Vasut <marex@denx.de>
|
|
*/
|
|
|
|
#include <dt-bindings/clock/stm32mp1-clksrc.h>
|
|
#include "stm32mp15-u-boot.dtsi"
|
|
#include "stm32mp15-ddr3-dhsom-2x1Gb-1066-binG.dtsi"
|
|
#include "stm32mp15-ddr3-dhsom-2x2Gb-1066-binG.dtsi"
|
|
#include "stm32mp15-ddr3-dhsom-2x4Gb-1066-binG.dtsi"
|
|
|
|
/ {
|
|
aliases {
|
|
i2c1 = &i2c2;
|
|
i2c3 = &i2c4;
|
|
i2c4 = &i2c5;
|
|
mmc0 = &sdmmc1;
|
|
mmc1 = &sdmmc2;
|
|
spi0 = &qspi;
|
|
usb0 = &usbotg_hs;
|
|
eeprom0 = &eeprom0;
|
|
};
|
|
|
|
config {
|
|
u-boot,boot-led = "heartbeat";
|
|
u-boot,error-led = "error";
|
|
dh,som-coding-gpios = <&gpiof 12 0>, <&gpiof 13 0>, <&gpiof 15 0>;
|
|
dh,ddr3-coding-gpios = <&gpioz 6 0>, <&gpioz 7 0>;
|
|
};
|
|
};
|
|
|
|
ðernet0 {
|
|
phy-reset-gpios = <&gpioh 3 GPIO_ACTIVE_LOW>;
|
|
/delete-property/ st,eth-ref-clk-sel;
|
|
};
|
|
|
|
ðernet0_rmii_pins_a {
|
|
pins1 {
|
|
pinmux = <STM32_PINMUX('G', 13, AF11)>, /* ETH1_RMII_TXD0 */
|
|
<STM32_PINMUX('G', 14, AF11)>, /* ETH1_RMII_TXD1 */
|
|
<STM32_PINMUX('B', 11, AF11)>, /* ETH1_RMII_TX_EN */
|
|
<STM32_PINMUX('A', 1, AF11)>, /* ETH1_RMII_REF_CLK */
|
|
<STM32_PINMUX('A', 2, AF11)>, /* ETH1_MDIO */
|
|
<STM32_PINMUX('C', 1, AF11)>; /* ETH1_MDC */
|
|
};
|
|
};
|
|
|
|
&i2c4 {
|
|
bootph-all;
|
|
bootph-pre-ram;
|
|
|
|
eeprom0: eeprom@50 {
|
|
};
|
|
};
|
|
|
|
&i2c4_pins_a {
|
|
bootph-all;
|
|
pins {
|
|
bootph-all;
|
|
};
|
|
};
|
|
|
|
&phy0 {
|
|
/delete-property/ reset-gpios;
|
|
};
|
|
|
|
&pinctrl {
|
|
mco2_pins_a: mco2-0 {
|
|
pins {
|
|
pinmux = <STM32_PINMUX('G', 2, AF1)>; /* MCO2 */
|
|
bias-disable;
|
|
drive-push-pull;
|
|
slew-rate = <2>;
|
|
};
|
|
};
|
|
|
|
mco2_sleep_pins_a: mco2-sleep-0 {
|
|
pins {
|
|
pinmux = <STM32_PINMUX('G', 2, ANALOG)>; /* MCO2 */
|
|
};
|
|
};
|
|
};
|
|
|
|
&pmic {
|
|
bootph-all;
|
|
bootph-pre-ram;
|
|
|
|
regulators {
|
|
bootph-pre-ram;
|
|
};
|
|
};
|
|
|
|
&flash0 {
|
|
bootph-pre-ram;
|
|
|
|
partitions {
|
|
compatible = "fixed-partitions";
|
|
#address-cells = <1>;
|
|
#size-cells = <1>;
|
|
|
|
partition@0 {
|
|
label = "fsbl1";
|
|
reg = <0x00000000 0x00040000>;
|
|
};
|
|
partition@40000 {
|
|
label = "fsbl2";
|
|
reg = <0x00040000 0x00040000>;
|
|
};
|
|
partition@500000 {
|
|
label = "uboot";
|
|
reg = <0x00080000 0x00160000>;
|
|
};
|
|
partition@900000 {
|
|
label = "env1";
|
|
reg = <0x001E0000 0x00010000>;
|
|
};
|
|
partition@980000 {
|
|
label = "env2";
|
|
reg = <0x001F0000 0x00010000>;
|
|
};
|
|
};
|
|
};
|
|
|
|
&qspi {
|
|
bootph-pre-ram;
|
|
};
|
|
|
|
&qspi_clk_pins_a {
|
|
bootph-pre-ram;
|
|
pins {
|
|
bootph-pre-ram;
|
|
};
|
|
};
|
|
|
|
&qspi_bk1_pins_a {
|
|
bootph-pre-ram;
|
|
pins1 {
|
|
bootph-pre-ram;
|
|
};
|
|
pins2 {
|
|
bootph-pre-ram;
|
|
};
|
|
};
|
|
|
|
&qspi_bk2_pins_a {
|
|
bootph-pre-ram;
|
|
pins1 {
|
|
bootph-pre-ram;
|
|
};
|
|
pins2 {
|
|
bootph-pre-ram;
|
|
};
|
|
};
|
|
|
|
&rcc {
|
|
/*
|
|
* Reinstate clock names from stm32mp151.dtsi, the MCO2 trick
|
|
* used in stm32mp15xx-dhcom-som.dtsi is not supported by the
|
|
* U-Boot clock framework.
|
|
*/
|
|
clock-names = "hse", "hsi", "csi", "lse", "lsi";
|
|
clocks = <&clk_hse>, <&clk_hsi>, <&clk_csi>,
|
|
<&clk_lse>, <&clk_lsi>;
|
|
|
|
/* The MCO2 is already configured correctly, remove those. */
|
|
/delete-property/ assigned-clocks;
|
|
/delete-property/ assigned-clock-parents;
|
|
/delete-property/ assigned-clock-rates;
|
|
|
|
st,clksrc = <
|
|
CLK_MPU_PLL1P
|
|
CLK_AXI_PLL2P
|
|
CLK_MCU_PLL3P
|
|
CLK_PLL12_HSE
|
|
CLK_PLL3_HSE
|
|
CLK_PLL4_HSE
|
|
CLK_RTC_LSE
|
|
CLK_MCO1_DISABLED
|
|
CLK_MCO2_PLL4P
|
|
>;
|
|
|
|
st,clkdiv = <
|
|
1 /*MPU*/
|
|
0 /*AXI*/
|
|
0 /*MCU*/
|
|
1 /*APB1*/
|
|
1 /*APB2*/
|
|
1 /*APB3*/
|
|
1 /*APB4*/
|
|
2 /*APB5*/
|
|
23 /*RTC*/
|
|
0 /*MCO1*/
|
|
1 /*MCO2*/
|
|
>;
|
|
|
|
st,pkcs = <
|
|
CLK_CKPER_HSE
|
|
CLK_FMC_ACLK
|
|
CLK_QSPI_ACLK
|
|
CLK_ETH_PLL4P
|
|
CLK_SDMMC12_PLL4P
|
|
CLK_DSI_DSIPLL
|
|
CLK_STGEN_HSE
|
|
CLK_USBPHY_HSE
|
|
CLK_SPI2S1_PLL3Q
|
|
CLK_SPI2S23_PLL3Q
|
|
CLK_SPI45_HSI
|
|
CLK_SPI6_HSI
|
|
CLK_I2C46_HSI
|
|
CLK_SDMMC3_PLL4P
|
|
CLK_USBO_USBPHY
|
|
CLK_ADC_CKPER
|
|
CLK_CEC_LSE
|
|
CLK_I2C12_HSI
|
|
CLK_I2C35_HSI
|
|
CLK_UART1_HSI
|
|
CLK_UART24_HSI
|
|
CLK_UART35_HSI
|
|
CLK_UART6_HSI
|
|
CLK_UART78_HSI
|
|
CLK_SPDIF_PLL4P
|
|
CLK_FDCAN_PLL4R
|
|
CLK_SAI1_PLL3Q
|
|
CLK_SAI2_PLL3Q
|
|
CLK_SAI3_PLL3Q
|
|
CLK_SAI4_PLL3Q
|
|
CLK_RNG1_LSI
|
|
CLK_RNG2_LSI
|
|
CLK_LPTIM1_PCLK1
|
|
CLK_LPTIM23_PCLK3
|
|
CLK_LPTIM45_LSE
|
|
>;
|
|
|
|
/*
|
|
* cfg = < DIVM1 DIVN P Q R PQR(p,q,r) >;
|
|
* frac = < f >;
|
|
*
|
|
* PRQ(p,q,r) ... for p,q,r: 0-output disabled / 1-output enabled
|
|
* DIVN ... actually multiplier, but RCC_PLL1CFGR1 calls the field DIVN
|
|
* m ... for PLL1,2: m=2 ; for PLL3,4: m=1
|
|
* XTAL = 24 MHz
|
|
*
|
|
* VCO = ( XTAL / (DIVM1 + 1) ) * m * ( DIVN + 1 + ( f / 8192 ) )
|
|
* P = VCO / (P + 1)
|
|
* Q = VCO / (Q + 1)
|
|
* R = VCO / (R + 1)
|
|
*/
|
|
|
|
/* VCO = 1066.0 MHz => P = 266 (AXI), Q = 533 (GPU), R = 533 (DDR) */
|
|
pll2: st,pll@1 {
|
|
compatible = "st,stm32mp1-pll";
|
|
reg = <1>;
|
|
cfg = < 2 65 1 0 0 PQR(1,1,1) >;
|
|
frac = < 0x1400 >;
|
|
bootph-all;
|
|
};
|
|
|
|
/* VCO = 417.8 MHz => P = 209, Q = 24, R = 11 */
|
|
pll3: st,pll@2 {
|
|
compatible = "st,stm32mp1-pll";
|
|
reg = <2>;
|
|
cfg = < 1 33 1 16 36 PQR(1,1,1) >;
|
|
frac = < 0x1a04 >;
|
|
bootph-all;
|
|
};
|
|
|
|
/* VCO = 600.0 MHz => P = 100, Q = 50, R = 50 */
|
|
pll4: st,pll@3 {
|
|
compatible = "st,stm32mp1-pll";
|
|
reg = <3>;
|
|
cfg = < 1 49 5 11 11 PQR(1,1,1) >;
|
|
bootph-all;
|
|
};
|
|
};
|
|
|
|
&sdmmc1 {
|
|
bootph-pre-ram;
|
|
st,use-ckin;
|
|
st,cmd-gpios = <&gpiod 2 0>;
|
|
st,ck-gpios = <&gpioc 12 0>;
|
|
st,ckin-gpios = <&gpioe 4 0>;
|
|
};
|
|
|
|
&sdmmc1_b4_pins_a {
|
|
bootph-pre-ram;
|
|
pins1 {
|
|
bootph-pre-ram;
|
|
};
|
|
pins2 {
|
|
bootph-pre-ram;
|
|
};
|
|
};
|
|
|
|
&sdmmc1_dir_pins_a {
|
|
bootph-pre-ram;
|
|
pins1 {
|
|
bootph-pre-ram;
|
|
};
|
|
pins2 {
|
|
bootph-pre-ram;
|
|
};
|
|
};
|
|
|
|
&sdmmc2 {
|
|
bootph-pre-ram;
|
|
};
|
|
|
|
&sdmmc2_b4_pins_a {
|
|
bootph-pre-ram;
|
|
pins {
|
|
bootph-pre-ram;
|
|
};
|
|
};
|
|
|
|
&sdmmc2_d47_pins_a {
|
|
bootph-pre-ram;
|
|
pins {
|
|
bootph-pre-ram;
|
|
};
|
|
};
|
|
|
|
&uart4 {
|
|
bootph-all;
|
|
};
|
|
|
|
&uart4_pins_a {
|
|
bootph-all;
|
|
pins1 {
|
|
bootph-all;
|
|
};
|
|
pins2 {
|
|
bootph-all;
|
|
/* pull-up on rx to avoid floating level */
|
|
bias-pull-up;
|
|
};
|
|
};
|
|
|
|
®11 {
|
|
bootph-pre-ram;
|
|
};
|
|
|
|
®18 {
|
|
bootph-pre-ram;
|
|
};
|
|
|
|
&usb33 {
|
|
bootph-pre-ram;
|
|
};
|
|
|
|
&usbotg_hs_pins_a {
|
|
bootph-pre-ram;
|
|
};
|
|
|
|
&usbotg_hs {
|
|
bootph-pre-ram;
|
|
};
|
|
|
|
&usbphyc {
|
|
bootph-pre-ram;
|
|
};
|
|
|
|
&usbphyc_port0 {
|
|
bootph-pre-ram;
|
|
};
|
|
|
|
&usbphyc_port1 {
|
|
bootph-pre-ram;
|
|
};
|
|
|
|
&vdd_usb {
|
|
bootph-pre-ram;
|
|
};
|