[U-Boot] [PATCH v2 1/2] rk3399: add basic soc driver

Kever Yang
2016-08-01T03:29:32Z

Hi Jaehoon Chung,

On 07/29/2016 04:00 PM, Jaehoon Chung wrote:
> Hi Kever,
>
> On 07/29/2016 11:35 AM, Kever Yang wrote:
>> This patch add driver for:
>> - clock driver including set_rate for cpu, mmc, vop, I2C.
>> - sysreset driver
>> - grf syscon driver
>>
>> Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
> I don't have a knowledge for rockchip..So i don't add the comments relevant to rockchip.
> Just add the general comments.

Thanks for your comments, I will take those reasonable for me.

>> ---
>>
>> Changes in v2:
>> - include '_SHIFT_' in '_MASK' MACRO
>> - fix comment style
>> - use DIV_ROUND_UP instead of div_round_up
>> - use uclass_get_device_by_driver in rockchip_get_cru
>> - implement ofdata_to_platdata for priv->cru init
>>
>> arch/arm/include/asm/arch-rockchip/cru_rk3399.h | 93 +++
>> arch/arm/mach-rockchip/rk3399/Makefile | 2 +
>> arch/arm/mach-rockchip/rk3399/reset_rk3399.c | 45 ++
>> arch/arm/mach-rockchip/rk3399/syscon_rk3399.c | 20 +
>> drivers/clk/Makefile | 1 +
>> drivers/clk/clk_rk3399.c | 819 ++++++++++++++++++++++++
>> 6 files changed, 980 insertions(+)
>> create mode 100644 arch/arm/include/asm/arch-rockchip/cru_rk3399.h
>> create mode 100644 arch/arm/mach-rockchip/rk3399/reset_rk3399.c
>> create mode 100644 arch/arm/mach-rockchip/rk3399/syscon_rk3399.c
>> create mode 100644 drivers/clk/clk_rk3399.c
>>
>> diff --git a/arch/arm/include/asm/arch-rockchip/cru_rk3399.h b/arch/arm/include/asm/arch-rockchip/cru_rk3399.h
>> new file mode 100644
>> index 0000000..c919f47
>> --- /dev/null
>> +++ b/arch/arm/include/asm/arch-rockchip/cru_rk3399.h
>> @@ -0,0 +1,93 @@
>> +/*
>> + * (C) Copyright 2016 Rockchip Electronics Co., Ltd
>> + *
>> + * SPDX-License-Identifier: GPL-2.0+
>> + */
>> +
>> +#ifndef __ASM_ARCH_CRU_RK3399_H_
>> +#define __ASM_ARCH_CRU_RK3399_H_
>> +
>> +#include <common.h>
>> +
>> +struct rk3399_pmucru {
>> + u32 ppll_con[6];
>> + u32 reserved[0x1a];
>> + u32 pmucru_clksel[6];
>> + u32 pmucru_clkfrac_con[2];
>> + u32 reserved2[0x18];
>> + u32 pmucru_clkgate_con[3];
>> + u32 reserved3;
>> + u32 pmucru_softrst_con[2];
>> + u32 reserved4[2];
>> + u32 pmucru_rstnhold_con[2];
>> + u32 reserved5[2];
>> + u32 pmucru_gatedis_con[2];
>> +};
>> +check_member(rk3399_pmucru, pmucru_gatedis_con[1], 0x134);
>> +
>> +struct rk3399_cru {
>> + u32 apll_l_con[6];
>> + u32 reserved[2];
>> + u32 apll_b_con[6];
>> + u32 reserved1[2];
>> + u32 dpll_con[6];
>> + u32 reserved2[2];
>> + u32 cpll_con[6];
>> + u32 reserved3[2];
>> + u32 gpll_con[6];
>> + u32 reserved4[2];
>> + u32 npll_con[6];
>> + u32 reserved5[2];
>> + u32 vpll_con[6];
>> + u32 reserved6[0x0a];
>> + u32 clksel_con[108];
>> + u32 reserved7[0x14];
>> + u32 clkgate_con[35];
>> + u32 reserved8[0x1d];
>> + u32 softrst_con[21];
>> + u32 reserved9[0x2b];
>> + u32 glb_srst_fst_value;
>> + u32 glb_srst_snd_value;
>> + u32 glb_cnt_th;
>> + u32 misc_con;
>> + u32 glb_rst_con;
>> + u32 glb_rst_st;
>> + u32 reserved10[0x1a];
>> + u32 sdmmc_con[2];
>> + u32 sdio0_con[2];
>> + u32 sdio1_con[2];
>> +};
>> +check_member(rk3399_cru, sdio1_con[1], 0x594);
>> +#define MHz 1000000
>> +#define KHz 1000
>> +#define OSC_HZ (24*MHz)
>> +#define APLL_HZ (600*MHz)
>> +#define GPLL_HZ (594*MHz)
>> +#define CPLL_HZ (384*MHz)
>> +#define PPLL_HZ (594*MHz)
>> +
>> +#define PMU_PCLK_HZ (99*MHz)
>> +
>> +#define ACLKM_CORE_HZ (300*MHz)
>> +#define ATCLK_CORE_HZ (300*MHz)
>> +#define PCLK_DBG_HZ (100*MHz)
>> +
>> +#define PERIHP_ACLK_HZ (148500*KHz)
>> +#define PERIHP_HCLK_HZ (148500*KHz)
>> +#define PERIHP_PCLK_HZ (37125*KHz)
>> +
>> +#define PERILP0_ACLK_HZ (99000*KHz)
>> +#define PERILP0_HCLK_HZ (99000*KHz)
>> +#define PERILP0_PCLK_HZ (49500*KHz)
>> +
>> +#define PERILP1_HCLK_HZ (99000*KHz)
>> +#define PERILP1_PCLK_HZ (49500*KHz)
>> +
>> +#define PWM_CLOCK_HZ PMU_PCLK_HZ
>> +
>> +enum apll_l_frequencies {
>> + APLL_L_1600_MHZ,
>> + APLL_L_600_MHZ,
>> +};
>> +
>> +#endif /* __ASM_ARCH_CRU_RK3399_H_ */
>> diff --git a/arch/arm/mach-rockchip/rk3399/Makefile b/arch/arm/mach-rockchip/rk3399/Makefile
>> index 3f219ac..3ca2028 100644
>> --- a/arch/arm/mach-rockchip/rk3399/Makefile
>> +++ b/arch/arm/mach-rockchip/rk3399/Makefile
>> @@ -5,3 +5,5 @@
>> #
>>
>> obj-y += rk3399.o
>> +obj-y += reset_rk3399.o
>> +obj-y += syscon_rk3399.o
>> diff --git a/arch/arm/mach-rockchip/rk3399/reset_rk3399.c b/arch/arm/mach-rockchip/rk3399/reset_rk3399.c
>> new file mode 100644
>> index 0000000..9a55546
>> --- /dev/null
>> +++ b/arch/arm/mach-rockchip/rk3399/reset_rk3399.c
>> @@ -0,0 +1,45 @@
>> +/*
>> + * (C) Copyright 2016 Rockchip Electronics Co., Ltd
>> + *
>> + * SPDX-License-Identifier: GPL-2.0
>> + */
>> +
>> +#include <common.h>
>> +#include <dm.h>
>> +#include <errno.h>
>> +#include <sysreset.h>
>> +#include <asm/io.h>
>> +#include <asm/arch/clock.h>
>> +#include <asm/arch/cru_rk3399.h>
>> +#include <asm/arch/hardware.h>
>> +#include <linux/err.h>
>> +
>> +int rk3399_sysreset_request(struct udevice *dev, enum sysreset_t type)
>> +{
>> + struct rk3399_cru *cru = rockchip_get_cru();
>> +
>> + if (IS_ERR(cru))
>> + return PTR_ERR(cru);
>> + switch (type) {
>> + case SYSRESET_WARM:
>> + writel(0xeca8, &cru->glb_srst_snd_value);
>> + break;
>> + case SYSRESET_COLD:
>> + writel(0xfdb9, &cru->glb_srst_fst_value);
>> + break;
>> + default:
>> + return -EPROTONOSUPPORT;
>> + }
>> +
>> + return -EINPROGRESS;
>> +}
>> +
>> +static struct sysreset_ops rk3399_sysreset = {
>> + .request = rk3399_sysreset_request,
>> +};
>> +
>> +U_BOOT_DRIVER(sysreset_rk3399) = {
>> + .name = "rk3399_sysreset",
>> + .id = UCLASS_SYSRESET,
>> + .ops = &rk3399_sysreset,
>> +};
>> diff --git a/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c b/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c
>> new file mode 100644
>> index 0000000..2d81c55
>> --- /dev/null
>> +++ b/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c
>> @@ -0,0 +1,20 @@
>> +/*
>> + * (C) Copyright 2016 Rockchip Electronics Co., Ltd
>> + *
>> + * SPDX-License-Identifier: GPL-2.0+
>> + */
>> +
>> +#include <common.h>
>> +#include <dm.h>
>> +#include <syscon.h>
>> +#include <asm/arch/clock.h>
>> +
>> +static const struct udevice_id rk3399_syscon_ids[] = {
>> + { .compatible = "rockchip,rk3399-grf", .data = ROCKCHIP_SYSCON_GRF },
>> +};
>> +
>> +U_BOOT_DRIVER(syscon_rk3399) = {
>> + .name = "rk3399_syscon",
>> + .id = UCLASS_SYSCON,
>> + .of_match = rk3399_syscon_ids,
>> +};
>> diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
>> index f7a8891..e20e932 100644
>> --- a/drivers/clk/Makefile
>> +++ b/drivers/clk/Makefile
>> @@ -8,6 +8,7 @@
>> obj-$(CONFIG_CLK) += clk-uclass.o clk_fixed_rate.o
>> obj-$(CONFIG_ROCKCHIP_RK3036) += clk_rk3036.o
>> obj-$(CONFIG_ROCKCHIP_RK3288) += clk_rk3288.o
>> +obj-$(CONFIG_ROCKCHIP_RK3399) += clk_rk3399.o
>> obj-$(CONFIG_SANDBOX) += clk_sandbox.o
>> obj-$(CONFIG_SANDBOX) += clk_sandbox_test.o
>> obj-$(CONFIG_MACH_PIC32) += clk_pic32.o
>> diff --git a/drivers/clk/clk_rk3399.c b/drivers/clk/clk_rk3399.c
>> new file mode 100644
>> index 0000000..c0bb80c
>> --- /dev/null
>> +++ b/drivers/clk/clk_rk3399.c
>> @@ -0,0 +1,819 @@
>> +/*
>> + * (C) Copyright 2015 Google, Inc
>> + *
>> + * SPDX-License-Identifier: GPL-2.0
>> + */
>> +
>> +#include <common.h>
>> +#include <clk-uclass.h>
>> +#include <dm.h>
>> +#include <errno.h>
>> +#include <syscon.h>
>> +#include <asm/io.h>
>> +#include <asm/arch/clock.h>
>> +#include <asm/arch/cru_rk3399.h>
>> +#include <asm/arch/hardware.h>
>> +#include <dm/lists.h>
>> +#include <dt-bindings/clock/rk3399-cru.h>
>> +
>> +DECLARE_GLOBAL_DATA_PTR;
>> +
>> +struct rk3399_clk_priv {
>> + struct rk3399_cru *cru;
>> + ulong rate;
>> +};
>> +
>> +struct pll_div {
>> + u32 refdiv;
>> + u32 fbdiv;
>> + u32 postdiv1;
>> + u32 postdiv2;
>> + u32 frac;
>> +};
>> +
>> +#define RATE_TO_DIV(input_rate, output_rate) \
>> + ((input_rate) / (output_rate) - 1);
>> +#define DIV_TO_RATE(input_rate, div) ((input_rate) / ((div) + 1))
>> +
>> +#define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\
>> + .refdiv = _refdiv,\
>> + .fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ),\
>> + .postdiv1 = _postdiv1, .postdiv2 = _postdiv2};
>> +
>> +static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2, 1);
>> +static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 1, 2, 2);
>> +static const struct pll_div ppll_init_cfg = PLL_DIVISORS(PPLL_HZ, 2, 2, 1);
>> +
>> +static const struct pll_div apll_l_1600_cfg = PLL_DIVISORS(1600*MHz, 3, 1, 1);
>> +static const struct pll_div apll_l_600_cfg = PLL_DIVISORS(600*MHz, 1, 2, 1);
>> +
>> +static const struct pll_div *apll_l_cfgs[] = {
>> + [APLL_L_1600_MHZ] = &apll_l_1600_cfg,
>> + [APLL_L_600_MHZ] = &apll_l_600_cfg,
>> +};
>> +
>> +enum {
>> + /* PLL_CON0 */
>> + PLL_FBDIV_MASK = 0xfff,
>> + PLL_FBDIV_SHIFT = 0,
>> +
>> + /* PLL_CON1 */
>> + PLL_POSTDIV2_SHIFT = 12,
>> + PLL_POSTDIV2_MASK = 0x7 << PLL_POSTDIV2_SHIFT,
>> + PLL_POSTDIV1_SHIFT = 8,
>> + PLL_POSTDIV1_MASK = 0x7 << PLL_POSTDIV1_SHIFT,
>> + PLL_REFDIV_MASK = 0x3f,
>> + PLL_REFDIV_SHIFT = 0,
>> +
>> + /* PLL_CON2 */
>> + PLL_LOCK_STATUS_SHIFT = 31,
>> + PLL_LOCK_STATUS_MASK = 1 << PLL_LOCK_STATUS_SHIFT,
>> + PLL_FRACDIV_MASK = 0xffffff,
>> + PLL_FRACDIV_SHIFT = 0,
>> +
>> + /* PLL_CON3 */
>> + PLL_MODE_SHIFT = 8,
>> + PLL_MODE_MASK = 3 << PLL_MODE_SHIFT,
>> + PLL_MODE_SLOW = 0,
>> + PLL_MODE_NORM,
>> + PLL_MODE_DEEP,
>> + PLL_DSMPD_SHIFT = 3,
>> + PLL_DSMPD_MASK = 1 << PLL_DSMPD_SHIFT,
>> + PLL_INTEGER_MODE = 1,
>> +
>> + /* PMUCRU_CLKSEL_CON0 */
>> + PMU_PCLK_DIV_CON_MASK = 0x1f,
>> + PMU_PCLK_DIV_CON_SHIFT = 0,
>> +
>> + /* PMUCRU_CLKSEL_CON1 */
>> + SPI3_PLL_SEL_SHIFT = 7,
>> + SPI3_PLL_SEL_MASK = 1 << SPI3_PLL_SEL_SHIFT,
>> + SPI3_PLL_SEL_24M = 0,
>> + SPI3_PLL_SEL_PPLL = 1,
>> + SPI3_DIV_CON_SHIFT = 0x0,
>> + SPI3_DIV_CON_MASK = 0x7f,
>> +
>> + /* PMUCRU_CLKSEL_CON2 */
>> + I2C_DIV_CON_MASK = 0x7f,
>> + I2C8_DIV_CON_SHIFT = 8,
>> + I2C0_DIV_CON_SHIFT = 0,
>> +
>> + /* PMUCRU_CLKSEL_CON3 */
>> + I2C4_DIV_CON_SHIFT = 0,
>> +
>> + /* CLKSEL_CON0 */
>> + ACLKM_CORE_L_DIV_CON_SHIFT = 8,
>> + ACLKM_CORE_L_DIV_CON_MASK = 0x1f << ACLKM_CORE_L_DIV_CON_SHIFT,
>> + CLK_CORE_L_PLL_SEL_SHIFT = 6,
>> + CLK_CORE_L_PLL_SEL_MASK = 3 << CLK_CORE_L_PLL_SEL_SHIFT,
>> + CLK_CORE_L_PLL_SEL_ALPLL = 0x0,
>> + CLK_CORE_L_PLL_SEL_ABPLL = 0x1,
>> + CLK_CORE_L_PLL_SEL_DPLL = 0x10,
>> + CLK_CORE_L_PLL_SEL_GPLL = 0x11,
>> + CLK_CORE_L_DIV_MASK = 0x1f,
>> + CLK_CORE_L_DIV_SHIFT = 0,
>> +
>> + /* CLKSEL_CON1 */
>> + PCLK_DBG_L_DIV_SHIFT = 0x8,
>> + PCLK_DBG_L_DIV_MASK = 0x1f << PCLK_DBG_L_DIV_SHIFT,
>> + ATCLK_CORE_L_DIV_SHIFT = 0,
>> + ATCLK_CORE_L_DIV_MASK = 0x1f << ATCLK_CORE_L_DIV_SHIFT,
>> +
>> + /* CLKSEL_CON14 */
>> + PCLK_PERIHP_DIV_CON_SHIFT = 12,
>> + PCLK_PERIHP_DIV_CON_MASK = 0x7 << PCLK_PERIHP_DIV_CON_SHIFT,
>> + HCLK_PERIHP_DIV_CON_SHIFT = 8,
>> + HCLK_PERIHP_DIV_CON_MASK = 3 << HCLK_PERIHP_DIV_CON_SHIFT,
>> + ACLK_PERIHP_PLL_SEL_SHIFT = 7,
>> + ACLK_PERIHP_PLL_SEL_MASK = 1 << ACLK_PERIHP_PLL_SEL_SHIFT,
>> + ACLK_PERIHP_PLL_SEL_CPLL = 0,
>> + ACLK_PERIHP_PLL_SEL_GPLL = 1,
>> + ACLK_PERIHP_DIV_CON_SHIFT = 0,
>> + ACLK_PERIHP_DIV_CON_MASK = 0x1f,
>> +
>> + /* CLKSEL_CON21 */
>> + ACLK_EMMC_PLL_SEL_SHIFT = 7,
>> + ACLK_EMMC_PLL_SEL_MASK = 0x1 << ACLK_EMMC_PLL_SEL_SHIFT,
>> + ACLK_EMMC_PLL_SEL_GPLL = 0x1,
>> + ACLK_EMMC_DIV_CON_SHIFT = 0,
>> + ACLK_EMMC_DIV_CON_MASK = 0x1f,
>> +
>> + /* CLKSEL_CON22 */
>> + CLK_EMMC_PLL_SHIFT = 8,
>> + CLK_EMMC_PLL_MASK = 0x7 << CLK_EMMC_PLL_SHIFT,
>> + CLK_EMMC_PLL_SEL_GPLL = 0x1,
>> + CLK_EMMC_DIV_CON_SHIFT = 0,
>> + CLK_EMMC_DIV_CON_MASK = 0x7f << CLK_EMMC_DIV_CON_SHIFT,
>> +
>> + /* CLKSEL_CON23 */
>> + PCLK_PERILP0_DIV_CON_SHIFT = 12,
>> + PCLK_PERILP0_DIV_CON_MASK = 0x7 << PCLK_PERILP0_DIV_CON_SHIFT,
>> + HCLK_PERILP0_DIV_CON_SHIFT = 8,
>> + HCLK_PERILP0_DIV_CON_MASK = 3 << HCLK_PERILP0_DIV_CON_SHIFT,
>> + ACLK_PERILP0_PLL_SEL_SHIFT = 7,
>> + ACLK_PERILP0_PLL_SEL_MASK = 1 << ACLK_PERILP0_PLL_SEL_SHIFT,
>> + ACLK_PERILP0_PLL_SEL_CPLL = 0,
>> + ACLK_PERILP0_PLL_SEL_GPLL = 1,
>> + ACLK_PERILP0_DIV_CON_SHIFT = 0,
>> + ACLK_PERILP0_DIV_CON_MASK = 0x1f,
>> +
>> + /* CLKSEL_CON25 */
>> + PCLK_PERILP1_DIV_CON_SHIFT = 8,
>> + PCLK_PERILP1_DIV_CON_MASK = 0x7 << PCLK_PERILP1_DIV_CON_SHIFT,
>> + HCLK_PERILP1_PLL_SEL_SHIFT = 7,
>> + HCLK_PERILP1_PLL_SEL_MASK = 1 << HCLK_PERILP1_PLL_SEL_SHIFT,
>> + HCLK_PERILP1_PLL_SEL_CPLL = 0,
>> + HCLK_PERILP1_PLL_SEL_GPLL = 1,
>> + HCLK_PERILP1_DIV_CON_SHIFT = 0,
>> + HCLK_PERILP1_DIV_CON_MASK = 0x1f,
>> +
>> + /* CLKSEL_CON26 */
>> + CLK_SARADC_DIV_CON_SHIFT = 8,
>> + CLK_SARADC_DIV_CON_MASK = 0xff << CLK_SARADC_DIV_CON_SHIFT,
>> +
>> + /* CLKSEL_CON27 */
>> + CLK_TSADC_SEL_X24M = 0x0,
>> + CLK_TSADC_SEL_SHIFT = 15,
>> + CLK_TSADC_SEL_MASK = 1 << CLK_TSADC_SEL_SHIFT,
>> + CLK_TSADC_DIV_CON_SHIFT = 0,
>> + CLK_TSADC_DIV_CON_MASK = 0x3ff,
>> +
>> + /* CLKSEL_CON47 & CLKSEL_CON48 */
>> + ACLK_VOP_PLL_SEL_SHIFT = 6,
>> + ACLK_VOP_PLL_SEL_MASK = 0x3 << ACLK_VOP_PLL_SEL_SHIFT,
>> + ACLK_VOP_PLL_SEL_CPLL = 0x1,
>> + ACLK_VOP_DIV_CON_SHIFT = 0,
>> + ACLK_VOP_DIV_CON_MASK = 0x1f << ACLK_VOP_DIV_CON_SHIFT,
>> +
>> + /* CLKSEL_CON49 & CLKSEL_CON50 */
>> + DCLK_VOP_DCLK_SEL_SHIFT = 11,
>> + DCLK_VOP_DCLK_SEL_MASK = 1 << DCLK_VOP_DCLK_SEL_SHIFT,
>> + DCLK_VOP_DCLK_SEL_DIVOUT = 0,
>> + DCLK_VOP_PLL_SEL_SHIFT = 8,
>> + DCLK_VOP_PLL_SEL_MASK = 3 << DCLK_VOP_PLL_SEL_SHIFT,
>> + DCLK_VOP_PLL_SEL_VPLL = 0,
>> + DCLK_VOP_DIV_CON_MASK = 0xff,
>> + DCLK_VOP_DIV_CON_SHIFT = 0,
>> +
>> + /* CLKSEL_CON58 */
>> + CLK_SPI_PLL_SEL_MASK = 1,
>> + CLK_SPI_PLL_SEL_CPLL = 0,
>> + CLK_SPI_PLL_SEL_GPLL = 1,
>> + CLK_SPI_PLL_DIV_CON_MASK = 0x7f,
>> + CLK_SPI5_PLL_DIV_CON_SHIFT = 8,
>> + CLK_SPI5_PLL_SEL_SHIFT = 15,
>> +
>> + /* CLKSEL_CON59 */
>> + CLK_SPI1_PLL_SEL_SHIFT = 15,
>> + CLK_SPI1_PLL_DIV_CON_SHIFT = 8,
>> + CLK_SPI0_PLL_SEL_SHIFT = 7,
>> + CLK_SPI0_PLL_DIV_CON_SHIFT = 0,
>> +
>> + /* CLKSEL_CON60 */
>> + CLK_SPI4_PLL_SEL_SHIFT = 15,
>> + CLK_SPI4_PLL_DIV_CON_SHIFT = 8,
>> + CLK_SPI2_PLL_SEL_SHIFT = 7,
>> + CLK_SPI2_PLL_DIV_CON_SHIFT = 0,
>> +
>> + /* CLKSEL_CON61 */
>> + CLK_I2C_PLL_SEL_MASK = 1,
>> + CLK_I2C_PLL_SEL_CPLL = 0,
>> + CLK_I2C_PLL_SEL_GPLL = 1,
>> + CLK_I2C5_PLL_SEL_SHIFT = 15,
>> + CLK_I2C5_DIV_CON_SHIFT = 8,
>> + CLK_I2C1_PLL_SEL_SHIFT = 7,
>> + CLK_I2C1_DIV_CON_SHIFT = 0,
>> +
>> + /* CLKSEL_CON62 */
>> + CLK_I2C6_PLL_SEL_SHIFT = 15,
>> + CLK_I2C6_DIV_CON_SHIFT = 8,
>> + CLK_I2C2_PLL_SEL_SHIFT = 7,
>> + CLK_I2C2_DIV_CON_SHIFT = 0,
>> +
>> + /* CLKSEL_CON63 */
>> + CLK_I2C7_PLL_SEL_SHIFT = 15,
>> + CLK_I2C7_DIV_CON_SHIFT = 8,
>> + CLK_I2C3_PLL_SEL_SHIFT = 7,
>> + CLK_I2C3_DIV_CON_SHIFT = 0,
>> +
>> + /* CRU_SOFTRST_CON4 */
>> + RESETN_DDR0_REQ_SHIFT = 8,
>> + RESETN_DDR0_REQ_MASK = 1 << RESETN_DDR0_REQ_SHIFT,
>> + RESETN_DDRPHY0_REQ_SHIFT = 9,
>> + RESETN_DDRPHY0_REQ_MASK = 1 << RESETN_DDRPHY0_REQ_SHIFT,
>> + RESETN_DDR1_REQ_SHIFT = 12,
>> + RESETN_DDR1_REQ_MASK = 1 << RESETN_DDR1_REQ_SHIFT,
>> + RESETN_DDRPHY1_REQ_SHIFT = 13,
>> + RESETN_DDRPHY1_REQ_MASK = 1 << RESETN_DDRPHY1_REQ_SHIFT,
>> +};
>> +
>> +#define VCO_MAX_KHZ (3200 * (MHz / KHz))
>> +#define VCO_MIN_KHZ (800 * (MHz / KHz))
>> +#define OUTPUT_MAX_KHZ (3200 * (MHz / KHz))
>> +#define OUTPUT_MIN_KHZ (16 * (MHz / KHz))
>> +
>> +/*
>> + * the div restructions of pll in integer mode, these are defined in
>> + * * CRU_*PLL_CON0 or PMUCRU_*PLL_CON0
>> + */
>> +#define PLL_DIV_MIN 16
>> +#define PLL_DIV_MAX 3200
>> +
>> +/*
>> + * How to calculate the PLL(from TRM V0.3 Part 1 Page 63):
>> + * Formulas also embedded within the Fractional PLL Verilog model:
>> + * If DSMPD = 1 (DSM is disabled, "integer mode")
>> + * FOUTVCO = FREF / REFDIV * FBDIV
>> + * FOUTPOSTDIV = FOUTVCO / POSTDIV1 / POSTDIV2
>> + * Where:
>> + * FOUTVCO = Fractional PLL non-divided output frequency
>> + * FOUTPOSTDIV = Fractional PLL divided output frequency
>> + * (output of second post divider)
>> + * FREF = Fractional PLL input reference frequency, (the OSC_HZ 24MHz input)
>> + * REFDIV = Fractional PLL input reference clock divider
>> + * FBDIV = Integer value programmed into feedback divide
>> + *
>> + */
>> +static void rkclk_set_pll(u32 *pll_con, const struct pll_div *div)
>> +{
>> + /* All 8 PLLs have same VCO and output frequency range restrictions. */
>> + u32 vco_khz = OSC_HZ / 1000 * div->fbdiv / div->refdiv;
>> + u32 output_khz = vco_khz / div->postdiv1 / div->postdiv2;
>> +
>> + debug("PLL at %p: fbdiv=%d, refdiv=%d, postdiv1=%d, "
>> + "postdiv2=%d, vco=%u khz, output=%u khz\n",
>> + pll_con, div->fbdiv, div->refdiv, div->postdiv1,
>> + div->postdiv2, vco_khz, output_khz);
>> + assert(vco_khz >= VCO_MIN_KHZ && vco_khz <= VCO_MAX_KHZ &&
>> + output_khz >= OUTPUT_MIN_KHZ && output_khz <= OUTPUT_MAX_KHZ &&
>> + div->fbdiv >= PLL_DIV_MIN && div->fbdiv <= PLL_DIV_MAX);
>> +
>> + /*
>> + * When power on or changing PLL setting,
>> + * we must force PLL into slow mode to ensure output stable clock.
>> + */
>> + rk_clrsetreg(&pll_con[3], PLL_MODE_MASK,
>> + PLL_MODE_SLOW << PLL_MODE_SHIFT);
>> +
>> + /* use integer mode */
>> + rk_clrsetreg(&pll_con[3], PLL_DSMPD_MASK,
>> + PLL_INTEGER_MODE << PLL_DSMPD_SHIFT);
>> +
>> + rk_clrsetreg(&pll_con[0], PLL_FBDIV_MASK,
>> + div->fbdiv << PLL_FBDIV_SHIFT);
>> + rk_clrsetreg(&pll_con[1],
>> + PLL_POSTDIV2_MASK | PLL_POSTDIV1_MASK |
>> + PLL_REFDIV_MASK | PLL_REFDIV_SHIFT,
>> + (div->postdiv2 << PLL_POSTDIV2_SHIFT) |
>> + (div->postdiv1 << PLL_POSTDIV1_SHIFT) |
>> + (div->refdiv << PLL_REFDIV_SHIFT));
>> +
>> + /* waiting for pll lock */
>> + while (!(readl(&pll_con[2]) & (1 << PLL_LOCK_STATUS_SHIFT)))
>> + udelay(1);
>> +
>> + /* pll enter normal mode */
>> + rk_clrsetreg(&pll_con[3], PLL_MODE_MASK,
>> + PLL_MODE_NORM << PLL_MODE_SHIFT);
>> +}
>> +
>> +static int pll_para_config(u32 freq_hz, struct pll_div *div)
>> +{
>> + u32 ref_khz = OSC_HZ / KHz, refdiv, fbdiv = 0;
>> + u32 postdiv1, postdiv2 = 1;
>> + u32 fref_khz;
>> + u32 diff_khz, best_diff_khz;
>> + const u32 max_refdiv = 63, max_fbdiv = 3200, min_fbdiv = 16;
>> + const u32 max_postdiv1 = 7, max_postdiv2 = 7;
> As i know, it recommends not to use the magin number.
> Is it possible to get from devicetree? otherwise how about defining in header file?
> It's my preference. :)

I can understand it looks better if we define in header file, but I
don't think it
help much here, because we already use meaningful variable, people should
able to understand what's going on. I think simple is better in bootloader.

>
>> + u32 vco_khz;
>> + u32 freq_khz = freq_hz / KHz;
>> +
>> + if (!freq_hz) {
>> + printf("%s: the frequency can't be 0 Hz\n", __func__);
>> + return -1;
> Use the error number. -EINVAL?

OK, will fix in next version.

>
>> + }
>> +
>> + postdiv1 = DIV_ROUND_UP(VCO_MIN_KHZ, freq_khz);
>> + if (postdiv1 > max_postdiv1) {
>> + postdiv2 = DIV_ROUND_UP(postdiv1, max_postdiv1);
>> + postdiv1 = DIV_ROUND_UP(postdiv1, postdiv2);
>> + }
>> +
>> + vco_khz = freq_khz * postdiv1 * postdiv2;
>> +
>> + if (vco_khz < VCO_MIN_KHZ || vco_khz > VCO_MAX_KHZ ||
>> + postdiv2 > max_postdiv2) {
>> + printf("%s: Cannot find out a supported VCO"
>> + " for Frequency (%uHz).\n", __func__, freq_hz);
>> + return -1;
> Ditto. error number.
>
>> + }
>> +
>> + div->postdiv1 = postdiv1;
>> + div->postdiv2 = postdiv2;
>> +
>> + best_diff_khz = vco_khz;
>> + for (refdiv = 1; refdiv < max_refdiv && best_diff_khz; refdiv++) {
>> + fref_khz = ref_khz / refdiv;
>> +
>> + fbdiv = vco_khz / fref_khz;
>> + if ((fbdiv >= max_fbdiv) || (fbdiv <= min_fbdiv))
>> + continue;
>> + diff_khz = vco_khz - fbdiv * fref_khz;
>> + if (fbdiv + 1 < max_fbdiv && diff_khz > fref_khz / 2) {
>> + fbdiv++;
>> + diff_khz = fref_khz - diff_khz;
>> + }
>> +
>> + if (diff_khz >= best_diff_khz)
>> + continue;
>> +
>> + best_diff_khz = diff_khz;
>> + div->refdiv = refdiv;
>> + div->fbdiv = fbdiv;
>> + }
>> +
>> + if (best_diff_khz > 4 * (MHz/KHz)) {
>> + printf("%s: Failed to match output frequency %u, "
>> + "difference is %u Hz,exceed 4MHZ\n", __func__, freq_hz,
>> + best_diff_khz * KHz);
>> + return -1;
> Ditto
>
>> + }
>> + return 0;
>> +}
>> +
>> +static void rkclk_init(struct rk3399_cru *cru)
>> +{
>> + u32 aclk_div;
>> + u32 hclk_div;
>> + u32 pclk_div;
> Make One line.

OK, will fix in next version.

>
>> +
>> + /*
>> + * some cru registers changed by bootrom, we'd better reset them to
>> + * reset/default values described in TRM to avoid confusion in kernel.
>> + * Please consider these three lines as a fix of bootrom bug.
>> + */
>> + rk_clrsetreg(&cru->clksel_con[12], 0xffff, 0x4101);
>> + rk_clrsetreg(&cru->clksel_con[19], 0xffff, 0x033f);
>> + rk_clrsetreg(&cru->clksel_con[56], 0x0003, 0x0003);
> Can not use the clearbits_le32()/setbit_be32()/clrsetbit_le32()?
> I'm not sure but you can check the io.h.

We can not use the api in io.h because the behaviour is different, these
registers
modification need to use higher 16bit mask and lower 16bit value.

Thanks,
- Kever

>
>> +
>> + /* configure gpll cpll */
>> + rkclk_set_pll(&cru->gpll_con[0], &gpll_init_cfg);
>> + rkclk_set_pll(&cru->cpll_con[0], &cpll_init_cfg);
>> +
>> + /* configure perihp aclk, hclk, pclk */
>> + aclk_div = GPLL_HZ / PERIHP_ACLK_HZ - 1;
>> + assert((aclk_div + 1) * PERIHP_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
>> +
>> + hclk_div = PERIHP_ACLK_HZ / PERIHP_HCLK_HZ - 1;
>> + assert((hclk_div + 1) * PERIHP_HCLK_HZ ==
>> + PERIHP_ACLK_HZ && (hclk_div < 0x4));
>> +
>> + pclk_div = PERIHP_ACLK_HZ / PERIHP_PCLK_HZ - 1;
>> + assert((pclk_div + 1) * PERIHP_PCLK_HZ ==
>> + PERIHP_ACLK_HZ && (pclk_div < 0x7));
>> +
>> + rk_clrsetreg(&cru->clksel_con[14],
>> + PCLK_PERIHP_DIV_CON_MASK | HCLK_PERIHP_DIV_CON_MASK |
>> + ACLK_PERIHP_PLL_SEL_MASK | ACLK_PERIHP_DIV_CON_MASK,
>> + pclk_div << PCLK_PERIHP_DIV_CON_SHIFT |
>> + hclk_div << HCLK_PERIHP_DIV_CON_SHIFT |
>> + ACLK_PERIHP_PLL_SEL_GPLL << ACLK_PERIHP_PLL_SEL_SHIFT |
>> + aclk_div << ACLK_PERIHP_DIV_CON_SHIFT);
>> +
>> + /* configure perilp0 aclk, hclk, pclk */
>> + aclk_div = GPLL_HZ / PERILP0_ACLK_HZ - 1;
>> + assert((aclk_div + 1) * PERILP0_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
>> +
>> + hclk_div = PERILP0_ACLK_HZ / PERILP0_HCLK_HZ - 1;
>> + assert((hclk_div + 1) * PERILP0_HCLK_HZ ==
>> + PERILP0_ACLK_HZ && (hclk_div < 0x4));
>> +
>> + pclk_div = PERILP0_ACLK_HZ / PERILP0_PCLK_HZ - 1;
>> + assert((pclk_div + 1) * PERILP0_PCLK_HZ ==
>> + PERILP0_ACLK_HZ && (pclk_div < 0x7));
>> +
>> + rk_clrsetreg(&cru->clksel_con[23],
>> + PCLK_PERILP0_DIV_CON_MASK | HCLK_PERILP0_DIV_CON_MASK |
>> + ACLK_PERILP0_PLL_SEL_MASK | ACLK_PERILP0_DIV_CON_MASK,
>> + pclk_div << PCLK_PERILP0_DIV_CON_SHIFT |
>> + hclk_div << HCLK_PERILP0_DIV_CON_SHIFT |
>> + ACLK_PERILP0_PLL_SEL_GPLL << ACLK_PERILP0_PLL_SEL_SHIFT |
>> + aclk_div << ACLK_PERILP0_DIV_CON_SHIFT);
>> +
>> + /* perilp1 hclk select gpll as source */
>> + hclk_div = GPLL_HZ / PERILP1_HCLK_HZ - 1;
>> + assert((hclk_div + 1) * PERILP1_HCLK_HZ ==
>> + GPLL_HZ && (hclk_div < 0x1f));
>> +
>> + pclk_div = PERILP1_HCLK_HZ / PERILP1_HCLK_HZ - 1;
>> + assert((pclk_div + 1) * PERILP1_HCLK_HZ ==
>> + PERILP1_HCLK_HZ && (hclk_div < 0x7));
>> +
>> + rk_clrsetreg(&cru->clksel_con[25],
>> + PCLK_PERILP1_DIV_CON_MASK | HCLK_PERILP1_DIV_CON_MASK |
>> + HCLK_PERILP1_PLL_SEL_MASK,
>> + pclk_div << PCLK_PERILP1_DIV_CON_SHIFT |
>> + hclk_div << HCLK_PERILP1_DIV_CON_SHIFT |
>> + HCLK_PERILP1_PLL_SEL_GPLL << HCLK_PERILP1_PLL_SEL_SHIFT);
>> +}
>> +
>> +void rk3399_configure_cpu(struct rk3399_cru *cru,
>> + enum apll_l_frequencies apll_l_freq)
>> +{
>> + u32 aclkm_div;
>> + u32 pclk_dbg_div;
>> + u32 atclk_div;
>> +
>> + rkclk_set_pll(&cru->apll_l_con[0], apll_l_cfgs[apll_l_freq]);
>> +
>> + aclkm_div = APLL_HZ / ACLKM_CORE_HZ - 1;
>> + assert((aclkm_div + 1) * ACLKM_CORE_HZ == APLL_HZ &&
>> + aclkm_div < 0x1f);
>> +
>> + pclk_dbg_div = APLL_HZ / PCLK_DBG_HZ - 1;
>> + assert((pclk_dbg_div + 1) * PCLK_DBG_HZ == APLL_HZ &&
>> + pclk_dbg_div < 0x1f);
>> +
>> + atclk_div = APLL_HZ / ATCLK_CORE_HZ - 1;
>> + assert((atclk_div + 1) * ATCLK_CORE_HZ == APLL_HZ &&
>> + atclk_div < 0x1f);
>> +
>> + rk_clrsetreg(&cru->clksel_con[0],
>> + ACLKM_CORE_L_DIV_CON_MASK | CLK_CORE_L_PLL_SEL_MASK |
>> + CLK_CORE_L_DIV_MASK,
>> + aclkm_div << ACLKM_CORE_L_DIV_CON_SHIFT |
>> + CLK_CORE_L_PLL_SEL_ALPLL << CLK_CORE_L_PLL_SEL_SHIFT |
>> + 0 << CLK_CORE_L_DIV_SHIFT);
>> +
>> + rk_clrsetreg(&cru->clksel_con[1],
>> + PCLK_DBG_L_DIV_MASK | ATCLK_CORE_L_DIV_MASK,
>> + pclk_dbg_div << PCLK_DBG_L_DIV_SHIFT |
>> + atclk_div << ATCLK_CORE_L_DIV_SHIFT);
>> +}
>> +#define I2C_CLK_REG_MASK(bus) \
>> + (I2C_DIV_CON_MASK << \
>> + CLK_I2C ##bus## _DIV_CON_SHIFT | \
>> + CLK_I2C_PLL_SEL_MASK << \
>> + CLK_I2C ##bus## _PLL_SEL_SHIFT)
>> +
>> +#define I2C_CLK_REG_VALUE(bus, clk_div) \
>> + ((clk_div - 1) << \
>> + CLK_I2C ##bus## _DIV_CON_SHIFT | \
>> + CLK_I2C_PLL_SEL_GPLL << \
>> + CLK_I2C ##bus## _PLL_SEL_SHIFT)
>> +
>> +#define I2C_CLK_DIV_VALUE(con, bus) \
>> + (con >> CLK_I2C ##bus## _DIV_CON_SHIFT) & \
>> + I2C_DIV_CON_MASK;
>> +
>> +static ulong rk3399_i2c_get_clk(struct rk3399_cru *cru, ulong clk_id)
>> +{
>> + u32 div, con;
>> +
>> + switch (clk_id) {
>> + case SCLK_I2C1:
>> + con = readl(&cru->clksel_con[61]);
>> + div = I2C_CLK_DIV_VALUE(con, 1);
>> + break;
>> + case SCLK_I2C2:
>> + con = readl(&cru->clksel_con[62]);
>> + div = I2C_CLK_DIV_VALUE(con, 2);
>> + break;
>> + case SCLK_I2C3:
>> + con = readl(&cru->clksel_con[63]);
>> + div = I2C_CLK_DIV_VALUE(con, 3);
>> + break;
>> + case SCLK_I2C5:
>> + con = readl(&cru->clksel_con[61]);
>> + div = I2C_CLK_DIV_VALUE(con, 5);
>> + break;
>> + case SCLK_I2C6:
>> + con = readl(&cru->clksel_con[62]);
>> + div = I2C_CLK_DIV_VALUE(con, 6);
>> + break;
>> + case SCLK_I2C7:
>> + con = readl(&cru->clksel_con[63]);
>> + div = I2C_CLK_DIV_VALUE(con, 7);
>> + break;
>> + default:
>> + printf("do not support this i2c bus\n");
>> + return -EINVAL;
>> + }
>> +
>> + return DIV_TO_RATE(GPLL_HZ, div);
>> +}
>> +
>> +static ulong rk3399_i2c_set_clk(struct rk3399_cru *cru, ulong clk_id, uint hz)
>> +{
>> + int src_clk_div;
>> +
>> + /* i2c0,4,8 src clock from ppll, i2c1,2,3,5,6,7 src clock from gpll*/
>> + src_clk_div = GPLL_HZ / hz;
>> + assert(src_clk_div - 1 < 127);
>> +
>> + switch (clk_id) {
>> + case SCLK_I2C1:
>> + rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(1),
>> + I2C_CLK_REG_VALUE(1, src_clk_div));
>> + break;
>> + case SCLK_I2C2:
>> + rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(2),
>> + I2C_CLK_REG_VALUE(2, src_clk_div));
>> + break;
>> + case SCLK_I2C3:
>> + rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(3),
>> + I2C_CLK_REG_VALUE(3, src_clk_div));
>> + break;
>> + case SCLK_I2C5:
>> + rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(5),
>> + I2C_CLK_REG_VALUE(5, src_clk_div));
>> + break;
>> + case SCLK_I2C6:
>> + rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(6),
>> + I2C_CLK_REG_VALUE(6, src_clk_div));
>> + break;
>> + case SCLK_I2C7:
>> + rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(7),
>> + I2C_CLK_REG_VALUE(7, src_clk_div));
>> + break;
>> + default:
>> + printf("do not support this i2c bus\n");
>> + return -EINVAL;
>> + }
>> +
>> + return DIV_TO_RATE(GPLL_HZ, src_clk_div);
>> +}
>> +
>> +static ulong rk3399_vop_set_clk(struct rk3399_cru *cru, ulong clk_id, u32 hz)
>> +{
>> + struct pll_div vpll_config = {0};
>> + int aclk_vop = 198*MHz;
>> + void *aclkreg_addr, *dclkreg_addr;
>> + u32 div;
>> +
>> + switch (clk_id) {
>> + case DCLK_VOP0:
>> + aclkreg_addr = &cru->clksel_con[47];
>> + dclkreg_addr = &cru->clksel_con[49];
>> + break;
>> + case DCLK_VOP1:
>> + aclkreg_addr = &cru->clksel_con[48];
>> + dclkreg_addr = &cru->clksel_con[50];
>> + break;
>> + default:
>> + return -EINVAL;
>> + }
>> + /* vop aclk source clk: cpll */
>> + div = CPLL_HZ / aclk_vop;
>> + assert(div - 1 < 32);
>> +
>> + rk_clrsetreg(aclkreg_addr,
>> + ACLK_VOP_PLL_SEL_MASK | ACLK_VOP_DIV_CON_MASK,
>> + ACLK_VOP_PLL_SEL_CPLL << ACLK_VOP_PLL_SEL_SHIFT |
>> + (div - 1) << ACLK_VOP_DIV_CON_SHIFT);
>> +
>> + /* vop dclk source from vpll, and equals to vpll(means div == 1) */
>> + if (pll_para_config(hz, &vpll_config))
>> + return -1;
>> +
>> + rkclk_set_pll(&cru->vpll_con[0], &vpll_config);
>> +
>> + rk_clrsetreg(dclkreg_addr,
>> + DCLK_VOP_DCLK_SEL_MASK | DCLK_VOP_PLL_SEL_MASK|
>> + DCLK_VOP_DIV_CON_MASK,
>> + DCLK_VOP_DCLK_SEL_DIVOUT << DCLK_VOP_DCLK_SEL_SHIFT |
>> + DCLK_VOP_PLL_SEL_VPLL << DCLK_VOP_PLL_SEL_SHIFT |
>> + (1 - 1) << DCLK_VOP_DIV_CON_SHIFT);
>> +
>> + return hz;
>> +}
>> +
>> +static ulong rk3399_mmc_get_clk(struct rk3399_cru *cru, uint clk_id)
>> +{
>> + u32 div, con;
>> +
>> + switch (clk_id) {
>> + case SCLK_SDMMC:
>> + con = readl(&cru->clksel_con[16]);
>> + break;
>> + case SCLK_EMMC:
>> + con = readl(&cru->clksel_con[21]);
>> + break;
>> + default:
>> + return -EINVAL;
>> + }
>> + div = (con>>CLK_EMMC_DIV_CON_SHIFT) & CLK_EMMC_DIV_CON_MASK;
>> +
>> + return DIV_TO_RATE(GPLL_HZ, div);
>> +}
>> +
>> +static ulong rk3399_mmc_set_clk(struct rk3399_cru *cru,
>> + ulong clk_id, ulong set_rate)
>> +{
>> + int src_clk_div;
>> + int aclk_emmc = 198*MHz;
>> +
>> + switch (clk_id) {
>> + case SCLK_SDMMC:
>> + /* Select clk_sdmmc source from GPLL too */
>> + src_clk_div = GPLL_HZ / set_rate;
>> + assert(src_clk_div - 1 < 127);
>> +
>> + rk_clrsetreg(&cru->clksel_con[16],
>> + CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
>> + CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT |
>> + (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
>> + break;
>> + case SCLK_EMMC:
>> + /* Select aclk_emmc source from GPLL */
>> + src_clk_div = GPLL_HZ / aclk_emmc;
>> + assert(src_clk_div - 1 < 31);
>> +
>> + rk_clrsetreg(&cru->clksel_con[21],
>> + ACLK_EMMC_PLL_SEL_MASK | ACLK_EMMC_DIV_CON_MASK,
>> + ACLK_EMMC_PLL_SEL_GPLL << ACLK_EMMC_PLL_SEL_SHIFT |
>> + (src_clk_div - 1) << ACLK_EMMC_DIV_CON_SHIFT);
>> +
>> + /* Select clk_emmc source from GPLL too */
>> + src_clk_div = GPLL_HZ / set_rate;
>> + assert(src_clk_div - 1 < 127);
>> +
>> + rk_clrsetreg(&cru->clksel_con[22],
>> + CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
>> + CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT |
>> + (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
>> + break;
>> + default:
>> + return -EINVAL;
>> + }
>> + return rk3399_mmc_get_clk(cru, clk_id);
>> +}
>> +
>> +static ulong rk3399_clk_get_rate(struct clk *clk)
>> +{
>> + struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
>> + ulong rate = 0;
>> +
>> + switch (clk->id) {
>> + case 0 ... 63:
>> + return 0;
>> + case SCLK_SDMMC:
>> + case SCLK_EMMC:
>> + rate = rk3399_mmc_get_clk(priv->cru, clk->id);
>> + break;
>> + case SCLK_I2C1:
>> + case SCLK_I2C2:
>> + case SCLK_I2C3:
>> + case SCLK_I2C5:
>> + case SCLK_I2C6:
>> + case SCLK_I2C7:
>> + rate = rk3399_i2c_get_clk(priv->cru, clk->id);
>> + break;
>> + case DCLK_VOP0:
>> + case DCLK_VOP1:
>> + break;
>> + default:
>> + return -ENOENT;
>> + }
>> +
>> + return rate;
>> +}
>> +
>> +static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate)
>> +{
>> + struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
>> + ulong ret = 0;
>> +
>> + switch (clk->id) {
>> + case 0 ... 63:
>> + return 0;
>> + case SCLK_SDMMC:
>> + case SCLK_EMMC:
>> + ret = rk3399_mmc_set_clk(priv->cru, clk->id, rate);
>> + break;
>> + case SCLK_I2C1:
>> + case SCLK_I2C2:
>> + case SCLK_I2C3:
>> + case SCLK_I2C5:
>> + case SCLK_I2C6:
>> + case SCLK_I2C7:
>> + ret = rk3399_i2c_set_clk(priv->cru, clk->id, rate);
>> + break;
>> + case DCLK_VOP0:
>> + case DCLK_VOP1:
>> + rate = rk3399_vop_set_clk(priv->cru, clk->id, rate);
>> + break;
>> + default:
>> + return -ENOENT;
>> + }
>> +
>> + return ret;
>> +}
>> +
>> +static struct clk_ops rk3399_clk_ops = {
>> + .get_rate = rk3399_clk_get_rate,
>> + .set_rate = rk3399_clk_set_rate,
>> +};
>> +
>> +void *rockchip_get_cru(void)
>> +{
>> + struct udevice *dev;
>> + fdt_addr_t *addr;
>> + int ret;
>> +
>> + ret = uclass_get_device_by_name(UCLASS_CLK, "clk_rk3399", &dev);
>> + if (ret)
>> + return ERR_PTR(ret);
>> +
>> + addr = dev_get_addr_ptr(dev);
>> + if ((fdt_addr_t)addr == FDT_ADDR_T_NONE)
>> + return ERR_PTR(-EINVAL);
>> +
>> + return addr;
>> +}
>> +
>> +static int rk3399_clk_probe(struct udevice *dev)
>> +{
>> + struct rk3399_clk_priv *priv = dev_get_priv(dev);
>> +
>> + rkclk_init(priv->cru);
>> +
>> + return 0;
>> +}
>> +
>> +static int rk3399_clk_ofdata_to_platdata(struct udevice *dev)
>> +{
>> + struct rk3399_clk_priv *priv = dev_get_priv(dev);
>> +
>> + priv->cru = (struct rk3399_cru *)dev_get_addr(dev);
>> +
>> + return 0;
>> +}
>> +
>> +static int rk3399_clk_bind(struct udevice *dev)
>> +{
>> + int ret;
>> +
>> + /* The reset driver does not have a device node, so bind it here */
>> + ret = device_bind_driver(gd->dm_root, "rk3399_sysreset", "reset", &dev);
>> + if (ret)
>> + printf("Warning: No RK3399 reset driver: ret=%d\n", ret);
>> +
>> + return 0;
>> +}
>> +
>> +static const struct udevice_id rk3399_clk_ids[] = {
>> + { .compatible = "rockchip,rk3399-cru" },
>> + { }
>> +};
>> +
>> +U_BOOT_DRIVER(clk_rk3399) = {
>> + .name = "clk_rk3399",
>> + .id = UCLASS_CLK,
>> + .of_match = rk3399_clk_ids,
>> + .priv_auto_alloc_size = sizeof(struct rk3399_clk_priv),
>> + .ofdata_to_platdata = rk3399_clk_ofdata_to_platdata,
>> + .ops = &rk3399_clk_ops,
>> + .bind = rk3399_clk_bind,
>> + .probe = rk3399_clk_probe,
>> +};
>>
>
>
>