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449 lines
13 KiB
C
449 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2021 NXP
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*/
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#include <common.h>
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#include <div64.h>
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#include <asm/io.h>
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#include <errno.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/pcc.h>
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#include <asm/arch/cgc.h>
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#include <asm/arch/sys_proto.h>
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#define cgc1_clk_TYPES 2
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#define cgc1_clk_NUM 8
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static enum cgc1_clk pcc3_clksrc[][8] = {
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{
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},
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{ DUMMY0_CLK,
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LPOSC,
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SOSC_DIV2,
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FRO_DIV2,
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XBAR_BUSCLK,
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PLL3_PFD1_DIV1,
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PLL3_PFD0_DIV2,
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PLL3_PFD0_DIV1
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}
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};
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static enum cgc1_clk pcc4_clksrc[][8] = {
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{
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DUMMY0_CLK,
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SOSC_DIV1,
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FRO_DIV1,
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PLL3_PFD3_DIV2,
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PLL3_PFD3_DIV1,
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PLL3_PFD2_DIV2,
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PLL3_PFD2_DIV1,
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PLL3_PFD1_DIV2
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},
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{
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DUMMY0_CLK,
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DUMMY1_CLK,
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LPOSC,
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SOSC_DIV2,
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FRO_DIV2,
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XBAR_BUSCLK,
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PLL3_VCODIV,
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PLL3_PFD0_DIV1
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}
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};
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static struct pcc_entry pcc3_arrays[] = {
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{PCC3_RBASE, DMA1_MP_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH0_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH1_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH2_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH3_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH4_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH5_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH6_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH7_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH8_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH9_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH10_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH11_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH12_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH13_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH14_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH15_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH16_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH17_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH18_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH19_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH20_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH21_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH22_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH23_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH24_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH25_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH26_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH27_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH28_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH29_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH30_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, DMA1_CH31_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, MU0_B_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, MU3_A_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, LLWU1_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, UPOWER_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, WDOG3_PCC3_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B},
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{PCC3_RBASE, WDOG4_PCC3_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B},
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{PCC3_RBASE, XRDC_MGR_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, SEMA42_1_PCC3_SLOT, CLKSRC_PER_BUS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, ROMCP1_PCC3_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
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{PCC3_RBASE, LPIT1_PCC3_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B},
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{PCC3_RBASE, TPM4_PCC3_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B},
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{PCC3_RBASE, TPM5_PCC3_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B},
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{PCC3_RBASE, FLEXIO1_PCC3_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B},
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{PCC3_RBASE, I3C2_PCC3_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B},
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{PCC3_RBASE, LPI2C4_PCC3_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B},
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{PCC3_RBASE, LPI2C5_PCC3_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B},
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{PCC3_RBASE, LPUART4_PCC3_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B},
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{PCC3_RBASE, LPUART5_PCC3_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B},
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{PCC3_RBASE, LPSPI4_PCC3_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B},
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{PCC3_RBASE, LPSPI5_PCC3_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B},
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{}
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};
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static struct pcc_entry pcc4_arrays[] = {
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{PCC4_RBASE, FLEXSPI2_PCC4_SLOT, CLKSRC_PER_PLAT, PCC_HAS_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, TPM6_PCC4_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, TPM7_PCC4_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, LPI2C6_PCC4_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, LPI2C7_PCC4_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, LPUART6_PCC4_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, LPUART7_PCC4_SLOT, CLKSRC_PER_BUS, PCC_HAS_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, SAI4_PCC4_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, SAI5_PCC4_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, PCTLE_PCC4_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B },
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{PCC4_RBASE, PCTLF_PCC4_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B },
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{PCC4_RBASE, SDHC0_PCC4_SLOT, CLKSRC_PER_PLAT, PCC_HAS_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, SDHC1_PCC4_SLOT, CLKSRC_PER_PLAT, PCC_HAS_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, SDHC2_PCC4_SLOT, CLKSRC_PER_PLAT, PCC_HAS_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, USB0_PCC4_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, USBPHY_PCC4_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, USB1_PCC4_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, USB1PHY_PCC4_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, USB_XBAR_PCC4_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B },
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{PCC4_RBASE, ENET_PCC4_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_HAS_RST_B },
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{PCC4_RBASE, SFA1_PCC4_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B },
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{PCC4_RBASE, RGPIOE_PCC4_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B },
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{PCC4_RBASE, RGPIOF_PCC4_SLOT, CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B },
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{}
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};
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static int find_pcc_entry(int pcc_controller, int pcc_clk_slot, struct pcc_entry **out)
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{
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struct pcc_entry *pcc_array;
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int index = 0;
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switch (pcc_controller) {
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case 3:
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pcc_array = pcc3_arrays;
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*out = &pcc3_arrays[0];
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break;
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case 4:
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pcc_array = pcc4_arrays;
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*out = &pcc4_arrays[0];
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break;
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default:
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printf("Not supported pcc_controller: %d\n", pcc_controller);
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return -EINVAL;
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}
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while (pcc_array->pcc_base) {
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if (pcc_array->pcc_slot == pcc_clk_slot)
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return index;
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pcc_array++;
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index++;
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}
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return -ENOENT;
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}
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int pcc_clock_enable(int pcc_controller, int pcc_clk_slot, bool enable)
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{
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u32 val;
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void __iomem *reg;
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int clk;
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struct pcc_entry *pcc_array;
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clk = find_pcc_entry(pcc_controller, pcc_clk_slot, &pcc_array);
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if (clk < 0)
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return -EINVAL;
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reg = (void __iomem *)(uintptr_t)(pcc_array[clk].pcc_base + pcc_array[clk].pcc_slot * 4);
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val = readl(reg);
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debug("%s: clk %d, reg 0x%p, val 0x%x, enable %d\n", __func__, clk, reg, val, enable);
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if (!(val & PCC_PR_MASK) || (val & PCC_INUSE_MASK))
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return -EPERM;
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if (enable)
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val |= PCC_CGC_MASK;
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else
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val &= ~PCC_CGC_MASK;
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writel(val, reg);
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debug("%s: val 0x%x\n", __func__, val);
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return 0;
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}
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/* The clock source select needs clock is disabled */
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int pcc_clock_sel(int pcc_controller, int pcc_clk_slot, enum cgc1_clk src)
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{
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u32 val, i, clksrc_type;
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void __iomem *reg;
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struct pcc_entry *pcc_array;
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enum cgc1_clk *cgc1_clk_array;
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int clk;
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clk = find_pcc_entry(pcc_controller, pcc_clk_slot, &pcc_array);
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if (clk < 0)
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return -EINVAL;
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reg = (void __iomem *)(uintptr_t)(pcc_array[clk].pcc_base + pcc_array[clk].pcc_slot * 4);
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clksrc_type = pcc_array[clk].clksrc;
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if (clksrc_type >= CLKSRC_NO_PCS) {
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printf("No PCS field for the PCC %d, clksrc type %d\n",
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clk, clksrc_type);
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return -EPERM;
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}
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if (pcc_controller == 3)
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cgc1_clk_array = pcc3_clksrc[clksrc_type];
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else
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cgc1_clk_array = pcc4_clksrc[clksrc_type];
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for (i = 0; i < cgc1_clk_NUM; i++) {
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if (cgc1_clk_array[i] == src) {
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/* Find the clock src, then set it to PCS */
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break;
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}
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}
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if (i == cgc1_clk_NUM) {
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printf("No parent in PCS of PCC %d, invalid scg_clk %d\n", clk, src);
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return -EINVAL;
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}
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val = readl(reg);
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debug("%s: clk %d, reg 0x%p, val 0x%x, clksrc_type %d\n",
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__func__, clk, reg, val, clksrc_type);
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if (!(val & PCC_PR_MASK) || (val & PCC_INUSE_MASK) ||
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(val & PCC_CGC_MASK)) {
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printf("Not permit to select clock source val = 0x%x\n", val);
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return -EPERM;
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}
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val &= ~PCC_PCS_MASK;
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val |= i << PCC_PCS_OFFSET;
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writel(val, reg);
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debug("%s: val 0x%x\n", __func__, val);
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return 0;
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}
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int pcc_clock_div_config(int pcc_controller, int pcc_clk_slot, bool frac, u8 div)
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{
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u32 val;
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void __iomem *reg;
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struct pcc_entry *pcc_array;
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int clk;
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clk = find_pcc_entry(pcc_controller, pcc_clk_slot, &pcc_array);
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if (clk < 0)
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return -EINVAL;
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reg = (void __iomem *)(uintptr_t)(pcc_array[clk].pcc_base + pcc_array[clk].pcc_slot * 4);
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if (div > 8 || (div == 1 && frac != 0))
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return -EINVAL;
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if (pcc_array[clk].div >= PCC_NO_DIV) {
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printf("No DIV/FRAC field for the PCC %d\n", clk);
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return -EPERM;
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}
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val = readl(reg);
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if (!(val & PCC_PR_MASK) || (val & PCC_INUSE_MASK) ||
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(val & PCC_CGC_MASK)) {
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printf("Not permit to set div/frac val = 0x%x\n", val);
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return -EPERM;
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}
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if (frac)
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val |= PCC_FRAC_MASK;
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else
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val &= ~PCC_FRAC_MASK;
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val &= ~PCC_PCD_MASK;
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val |= (div - 1) & PCC_PCD_MASK;
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writel(val, reg);
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return 0;
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}
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bool pcc_clock_is_enable(int pcc_controller, int pcc_clk_slot)
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{
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u32 val;
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void __iomem *reg;
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struct pcc_entry *pcc_array;
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int clk;
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clk = find_pcc_entry(pcc_controller, pcc_clk_slot, &pcc_array);
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if (clk < 0)
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return -EINVAL;
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reg = (void __iomem *)(uintptr_t)(pcc_array[clk].pcc_base + pcc_array[clk].pcc_slot * 4);
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val = readl(reg);
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if ((val & PCC_INUSE_MASK) || (val & PCC_CGC_MASK))
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return true;
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return false;
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}
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int pcc_clock_get_clksrc(int pcc_controller, int pcc_clk_slot, enum cgc1_clk *src)
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{
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u32 val, clksrc_type;
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void __iomem *reg;
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struct pcc_entry *pcc_array;
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int clk;
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enum cgc1_clk *cgc1_clk_array;
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clk = find_pcc_entry(pcc_controller, pcc_clk_slot, &pcc_array);
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if (clk < 0)
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return -EINVAL;
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clksrc_type = pcc_array[clk].clksrc;
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if (clksrc_type >= CLKSRC_NO_PCS) {
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printf("No PCS field for the PCC %d, clksrc type %d\n",
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|
pcc_clk_slot, clksrc_type);
|
|
return -EPERM;
|
|
}
|
|
|
|
reg = (void __iomem *)(uintptr_t)(pcc_array[clk].pcc_base + pcc_array[clk].pcc_slot * 4);
|
|
|
|
val = readl(reg);
|
|
|
|
debug("%s: clk %d, reg 0x%p, val 0x%x, type %d\n",
|
|
__func__, pcc_clk_slot, reg, val, clksrc_type);
|
|
|
|
if (!(val & PCC_PR_MASK)) {
|
|
printf("This pcc slot is not present = 0x%x\n", val);
|
|
return -EPERM;
|
|
}
|
|
|
|
val &= PCC_PCS_MASK;
|
|
val = (val >> PCC_PCS_OFFSET);
|
|
|
|
if (!val) {
|
|
printf("Clock source is off\n");
|
|
return -EIO;
|
|
}
|
|
|
|
if (pcc_controller == 3)
|
|
cgc1_clk_array = pcc3_clksrc[clksrc_type];
|
|
else
|
|
cgc1_clk_array = pcc4_clksrc[clksrc_type];
|
|
|
|
*src = cgc1_clk_array[val];
|
|
|
|
debug("%s: parent cgc1 clk %d\n", __func__, *src);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int pcc_reset_peripheral(int pcc_controller, int pcc_clk_slot, bool reset)
|
|
{
|
|
u32 val;
|
|
void __iomem *reg;
|
|
struct pcc_entry *pcc_array;
|
|
int clk;
|
|
|
|
clk = find_pcc_entry(pcc_controller, pcc_clk_slot, &pcc_array);
|
|
if (clk < 0)
|
|
return -EINVAL;
|
|
|
|
if (pcc_array[clk].rst_b == PCC_NO_RST_B)
|
|
return 0;
|
|
|
|
reg = (void __iomem *)(uintptr_t)(pcc_array[clk].pcc_base + pcc_array[clk].pcc_slot * 4);
|
|
|
|
val = readl(reg);
|
|
|
|
debug("%s: clk %d, reg 0x%p, val 0x%x\n", __func__, pcc_clk_slot, reg, val);
|
|
|
|
if (!(val & PCC_PR_MASK)) {
|
|
printf("This pcc slot is not present = 0x%x\n", val);
|
|
return -EPERM;
|
|
}
|
|
|
|
if (reset)
|
|
val &= ~BIT(28);
|
|
else
|
|
val |= BIT(28);
|
|
|
|
writel(val, reg);
|
|
|
|
debug("%s: clk %d, reg 0x%p, val 0x%x\n", __func__, pcc_clk_slot, reg, val);
|
|
|
|
return 0;
|
|
}
|
|
|
|
u32 pcc_clock_get_rate(int pcc_controller, int pcc_clk_slot)
|
|
{
|
|
u32 val, rate, frac, div;
|
|
void __iomem *reg;
|
|
enum cgc1_clk parent;
|
|
int ret;
|
|
int clk;
|
|
struct pcc_entry *pcc_array;
|
|
|
|
clk = find_pcc_entry(pcc_controller, pcc_clk_slot, &pcc_array);
|
|
if (clk < 0)
|
|
return -EINVAL;
|
|
|
|
ret = pcc_clock_get_clksrc(pcc_controller, pcc_clk_slot, &parent);
|
|
if (ret)
|
|
return 0;
|
|
|
|
rate = cgc1_clk_get_rate(parent);
|
|
|
|
debug("%s: parent rate %u\n", __func__, rate);
|
|
|
|
if (pcc_array[clk].div == PCC_HAS_DIV) {
|
|
reg = (void __iomem *)(uintptr_t)(pcc_array[clk].pcc_base +
|
|
pcc_array[clk].pcc_slot * 4);
|
|
val = readl(reg);
|
|
|
|
frac = (val & PCC_FRAC_MASK) >> PCC_FRAC_OFFSET;
|
|
div = (val & PCC_PCD_MASK) >> PCC_PCD_OFFSET;
|
|
|
|
/*
|
|
* Theoretically don't have overflow in the calc,
|
|
* the rate won't exceed 2G
|
|
*/
|
|
rate = rate * (frac + 1) / (div + 1);
|
|
}
|
|
|
|
debug("%s: rate %u\n", __func__, rate);
|
|
return rate;
|
|
}
|