---
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;