[U-Boot] [PATCH v2 3/7] rockchip: rk3128: add clock driver
Kever Yang
kever.yang at rock-chips.com
Mon Nov 27 09:51:20 UTC 2017
Add rk3128 clock driver and cru structure definition.
Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
---
Changes in v2:
- add clock for saradc, vop, nandc, i2c
- update driver bind for sysreset driver and reset driver
- add "rockchip,rk3126-cru" for compatible
arch/arm/include/asm/arch-rockchip/cru_rk3128.h | 212 +++++++++
arch/arm/mach-rockchip/rk3128/Makefile | 1 +
arch/arm/mach-rockchip/rk3128/clk_rk3128.c | 32 ++
drivers/clk/rockchip/Makefile | 3 +-
drivers/clk/rockchip/clk_rk3128.c | 609 ++++++++++++++++++++++++
5 files changed, 856 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/include/asm/arch-rockchip/cru_rk3128.h
create mode 100644 arch/arm/mach-rockchip/rk3128/clk_rk3128.c
create mode 100644 drivers/clk/rockchip/clk_rk3128.c
diff --git a/arch/arm/include/asm/arch-rockchip/cru_rk3128.h b/arch/arm/include/asm/arch-rockchip/cru_rk3128.h
new file mode 100644
index 0000000..cc317dc
--- /dev/null
+++ b/arch/arm/include/asm/arch-rockchip/cru_rk3128.h
@@ -0,0 +1,212 @@
+/*
+ * Copyright (c) 2017 Rockchip Electronics Co., Ltd
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _ASM_ARCH_CRU_RK3128_H
+#define _ASM_ARCH_CRU_RK3128_H
+
+#include <common.h>
+
+#define MHz 1000000
+#define OSC_HZ (24 * MHz)
+
+#define APLL_HZ (600 * MHz)
+#define GPLL_HZ (594 * MHz)
+
+#define CORE_PERI_HZ 150000000
+#define CORE_ACLK_HZ 300000000
+
+#define BUS_ACLK_HZ 148500000
+#define BUS_HCLK_HZ 148500000
+#define BUS_PCLK_HZ 74250000
+
+#define PERI_ACLK_HZ 148500000
+#define PERI_HCLK_HZ 148500000
+#define PERI_PCLK_HZ 74250000
+
+/* Private data for the clock driver - used by rockchip_get_cru() */
+struct rk3128_clk_priv {
+ struct rk3128_cru *cru;
+};
+
+struct rk3128_cru {
+ struct rk3128_pll {
+ unsigned int con0;
+ unsigned int con1;
+ unsigned int con2;
+ unsigned int con3;
+ } pll[4];
+ unsigned int cru_mode_con;
+ unsigned int cru_clksel_con[35];
+ unsigned int cru_clkgate_con[11];
+ unsigned int reserved;
+ unsigned int cru_glb_srst_fst_value;
+ unsigned int cru_glb_srst_snd_value;
+ unsigned int reserved1[2];
+ unsigned int cru_softrst_con[9];
+ unsigned int cru_misc_con;
+ unsigned int reserved2[2];
+ unsigned int cru_glb_cnt_th;
+ unsigned int reserved3[3];
+ unsigned int cru_glb_rst_st;
+ unsigned int reserved4[(0x1c0 - 0x150) / 4 - 1];
+ unsigned int cru_sdmmc_con[2];
+ unsigned int cru_sdio_con[2];
+ unsigned int reserved5[2];
+ unsigned int cru_emmc_con[2];
+ unsigned int reserved6[4];
+ unsigned int cru_pll_prg_en;
+};
+check_member(rk3128_cru, cru_pll_prg_en, 0x01f0);
+
+struct pll_div {
+ u32 refdiv;
+ u32 fbdiv;
+ u32 postdiv1;
+ u32 postdiv2;
+ u32 frac;
+};
+
+enum {
+ /* PLLCON0*/
+ PLL_POSTDIV1_SHIFT = 12,
+ PLL_POSTDIV1_MASK = 7 << PLL_POSTDIV1_SHIFT,
+ PLL_FBDIV_SHIFT = 0,
+ PLL_FBDIV_MASK = 0xfff,
+
+ /* PLLCON1 */
+ PLL_RST_SHIFT = 14,
+ PLL_PD_SHIFT = 13,
+ PLL_PD_MASK = 1 << PLL_PD_SHIFT,
+ PLL_DSMPD_SHIFT = 12,
+ PLL_DSMPD_MASK = 1 << PLL_DSMPD_SHIFT,
+ PLL_LOCK_STATUS_SHIFT = 10,
+ PLL_LOCK_STATUS_MASK = 1 << PLL_LOCK_STATUS_SHIFT,
+ PLL_POSTDIV2_SHIFT = 6,
+ PLL_POSTDIV2_MASK = 7 << PLL_POSTDIV2_SHIFT,
+ PLL_REFDIV_SHIFT = 0,
+ PLL_REFDIV_MASK = 0x3f,
+
+ /* CRU_MODE */
+ GPLL_MODE_SHIFT = 12,
+ GPLL_MODE_MASK = 3 << GPLL_MODE_SHIFT,
+ GPLL_MODE_SLOW = 0,
+ GPLL_MODE_NORM,
+ GPLL_MODE_DEEP,
+ CPLL_MODE_SHIFT = 8,
+ CPLL_MODE_MASK = 1 << CPLL_MODE_SHIFT,
+ CPLL_MODE_SLOW = 0,
+ CPLL_MODE_NORM,
+ DPLL_MODE_SHIFT = 4,
+ DPLL_MODE_MASK = 1 << DPLL_MODE_SHIFT,
+ DPLL_MODE_SLOW = 0,
+ DPLL_MODE_NORM,
+ APLL_MODE_SHIFT = 0,
+ APLL_MODE_MASK = 1 << APLL_MODE_SHIFT,
+ APLL_MODE_SLOW = 0,
+ APLL_MODE_NORM,
+
+ /* CRU_CLK_SEL0_CON */
+ BUS_ACLK_PLL_SEL_SHIFT = 14,
+ BUS_ACLK_PLL_SEL_MASK = 3 << BUS_ACLK_PLL_SEL_SHIFT,
+ BUS_ACLK_PLL_SEL_CPLL = 0,
+ BUS_ACLK_PLL_SEL_GPLL,
+ BUS_ACLK_PLL_SEL_GPLL_DIV2,
+ BUS_ACLK_PLL_SEL_GPLL_DIV3,
+ BUS_ACLK_DIV_SHIFT = 8,
+ BUS_ACLK_DIV_MASK = 0x1f << BUS_ACLK_DIV_SHIFT,
+ CORE_CLK_PLL_SEL_SHIFT = 7,
+ CORE_CLK_PLL_SEL_MASK = 1 << CORE_CLK_PLL_SEL_SHIFT,
+ CORE_CLK_PLL_SEL_APLL = 0,
+ CORE_CLK_PLL_SEL_GPLL_DIV2,
+ CORE_DIV_CON_SHIFT = 0,
+ CORE_DIV_CON_MASK = 0x1f << CORE_DIV_CON_SHIFT,
+
+ /* CRU_CLK_SEL1_CON */
+ BUS_PCLK_DIV_SHIFT = 12,
+ BUS_PCLK_DIV_MASK = 7 << BUS_PCLK_DIV_SHIFT,
+ BUS_HCLK_DIV_SHIFT = 8,
+ BUS_HCLK_DIV_MASK = 3 << BUS_HCLK_DIV_SHIFT,
+ CORE_ACLK_DIV_SHIFT = 4,
+ CORE_ACLK_DIV_MASK = 7 << CORE_ACLK_DIV_SHIFT,
+ CORE_PERI_DIV_SHIFT = 0,
+ CORE_PERI_DIV_MASK = 0xf << CORE_PERI_DIV_SHIFT,
+
+ /* CRU_CLK_SEL2_CON */
+ NANDC_PLL_SEL_SHIFT = 14,
+ NANDC_PLL_SEL_MASK = 7 << NANDC_PLL_SEL_SHIFT,
+ NANDC_PLL_SEL_CPLL = 0,
+ NANDC_PLL_SEL_GPLL,
+ NANDC_CLK_DIV_SHIFT = 8,
+ NANDC_CLK_DIV_MASK = 0x1f << NANDC_CLK_DIV_SHIFT,
+ PVTM_CLK_DIV_SHIFT = 0,
+ PVTM_CLK_DIV_MASK = 0x3f << PVTM_CLK_DIV_SHIFT,
+
+ /* CRU_CLKSEL10_CON */
+ PERI_PLL_SEL_SHIFT = 14,
+ PERI_PLL_SEL_MASK = 1 << PERI_PLL_SEL_SHIFT,
+ PERI_PLL_APLL = 0,
+ PERI_PLL_DPLL,
+ PERI_PLL_GPLL,
+ PERI_PCLK_DIV_SHIFT = 12,
+ PERI_PCLK_DIV_MASK = 3 << PERI_PCLK_DIV_SHIFT,
+ PERI_HCLK_DIV_SHIFT = 8,
+ PERI_HCLK_DIV_MASK = 3 << PERI_HCLK_DIV_SHIFT,
+ PERI_ACLK_DIV_SHIFT = 0,
+ PERI_ACLK_DIV_MASK = 0x1f << PERI_ACLK_DIV_SHIFT,
+
+ /* CRU_CLKSEL11_CON */
+ MMC0_PLL_SHIFT = 6,
+ MMC0_PLL_MASK = 3 << MMC0_PLL_SHIFT,
+ MMC0_SEL_APLL = 0,
+ MMC0_SEL_GPLL,
+ MMC0_SEL_GPLL_DIV2,
+ MMC0_SEL_24M,
+ MMC0_DIV_SHIFT = 0,
+ MMC0_DIV_MASK = 0x3f << MMC0_DIV_SHIFT,
+
+ /* CRU_CLKSEL12_CON */
+ EMMC_PLL_SHIFT = 14,
+ EMMC_PLL_MASK = 3 << EMMC_PLL_SHIFT,
+ EMMC_SEL_APLL = 0,
+ EMMC_SEL_GPLL,
+ EMMC_SEL_GPLL_DIV2,
+ EMMC_SEL_24M,
+ EMMC_DIV_SHIFT = 8,
+ EMMC_DIV_MASK = 0x3f << EMMC_DIV_SHIFT,
+
+ /* CLKSEL_CON24 */
+ SARADC_DIV_CON_SHIFT = 8,
+ SARADC_DIV_CON_MASK = GENMASK(15, 8),
+ SARADC_DIV_CON_WIDTH = 8,
+
+ /* CRU_CLKSEL27_CON*/
+ DCLK_VOP_SEL_SHIFT = 0,
+ DCLK_VOP_SEL_MASK = 1 << DCLK_VOP_SEL_SHIFT,
+ DCLK_VOP_PLL_SEL_CPLL = 0,
+ DCLK_VOP_DIV_CON_SHIFT = 8,
+ DCLK_VOP_DIV_CON_MASK = 0xfff << DCLK_VOP_DIV_CON_SHIFT,
+
+ /* CRU_CLKSEL31_CON */
+ VIO0_PLL_SHIFT = 5,
+ VIO0_PLL_MASK = 7 << VIO0_PLL_SHIFT,
+ VI00_SEL_CPLL = 0,
+ VIO0_SEL_GPLL,
+ VIO0_DIV_SHIFT = 0,
+ VIO0_DIV_MASK = 0x1f << VIO0_DIV_SHIFT,
+ VIO1_PLL_SHIFT = 13,
+ VIO1_PLL_MASK = 7 << VIO1_PLL_SHIFT,
+ VI01_SEL_CPLL = 0,
+ VIO1_SEL_GPLL,
+ VIO1_DIV_SHIFT = 8,
+ VIO1_DIV_MASK = 0x1f << VIO1_DIV_SHIFT,
+
+ /* CRU_SOFTRST5_CON */
+ DDRCTRL_PSRST_SHIFT = 11,
+ DDRCTRL_SRST_SHIFT = 10,
+ DDRPHY_PSRST_SHIFT = 9,
+ DDRPHY_SRST_SHIFT = 8,
+};
+#endif
diff --git a/arch/arm/mach-rockchip/rk3128/Makefile b/arch/arm/mach-rockchip/rk3128/Makefile
index 0f63d92..50e1117 100644
--- a/arch/arm/mach-rockchip/rk3128/Makefile
+++ b/arch/arm/mach-rockchip/rk3128/Makefile
@@ -6,3 +6,4 @@
obj-y += rk3128.o
obj-y += syscon_rk3128.o
+obj-y += clk_rk3128.o
diff --git a/arch/arm/mach-rockchip/rk3128/clk_rk3128.c b/arch/arm/mach-rockchip/rk3128/clk_rk3128.c
new file mode 100644
index 0000000..7ca5fd3
--- /dev/null
+++ b/arch/arm/mach-rockchip/rk3128/clk_rk3128.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2017 Rockchip Electronics Co., Ltd
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <syscon.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/cru_rk3128.h>
+
+int rockchip_get_clk(struct udevice **devp)
+{
+ return uclass_get_device_by_driver(UCLASS_CLK,
+ DM_GET_DRIVER(rockchip_rk3128_cru), devp);
+}
+
+void *rockchip_get_cru(void)
+{
+ struct rk3128_clk_priv *priv;
+ struct udevice *dev;
+ int ret;
+
+ ret = rockchip_get_clk(&dev);
+ if (ret)
+ return ERR_PTR(ret);
+
+ priv = dev_get_priv(dev);
+
+ return priv->cru;
+}
diff --git a/drivers/clk/rockchip/Makefile b/drivers/clk/rockchip/Makefile
index c50aff2..eae0ef6 100644
--- a/drivers/clk/rockchip/Makefile
+++ b/drivers/clk/rockchip/Makefile
@@ -1,10 +1,11 @@
#
-# Copyright (c) 2016 Google, Inc
+# Copyright (c) 2017 Rockchip Electronics Co., Ltd
#
# SPDX-License-Identifier: GPL-2.0+
#
obj-$(CONFIG_ROCKCHIP_RK3036) += clk_rk3036.o
+obj-$(CONFIG_ROCKCHIP_RK3128) += clk_rk3128.o
obj-$(CONFIG_ROCKCHIP_RK3188) += clk_rk3188.o
obj-$(CONFIG_ROCKCHIP_RK322X) += clk_rk322x.o
obj-$(CONFIG_ROCKCHIP_RK3288) += clk_rk3288.o
diff --git a/drivers/clk/rockchip/clk_rk3128.c b/drivers/clk/rockchip/clk_rk3128.c
new file mode 100644
index 0000000..df84f83
--- /dev/null
+++ b/drivers/clk/rockchip/clk_rk3128.c
@@ -0,0 +1,609 @@
+/*
+ * (C) Copyright 2017 Rockchip Electronics Co., Ltd
+ *
+ * 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_rk3128.h>
+#include <asm/arch/hardware.h>
+#include <bitfield.h>
+#include <dm/lists.h>
+#include <dt-bindings/clock/rk3128-cru.h>
+#include <linux/log2.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+enum {
+ VCO_MAX_HZ = 2400U * 1000000,
+ VCO_MIN_HZ = 600 * 1000000,
+ OUTPUT_MAX_HZ = 2400U * 1000000,
+ OUTPUT_MIN_HZ = 24 * 1000000,
+};
+
+#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};
+
+/* use integer mode*/
+static const struct pll_div apll_init_cfg = PLL_DIVISORS(APLL_HZ, 1, 3, 1);
+static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2, 1);
+
+static int rkclk_set_pll(struct rk3128_cru *cru, enum rk_clk_id clk_id,
+ const struct pll_div *div)
+{
+ int pll_id = rk_pll_id(clk_id);
+ struct rk3128_pll *pll = &cru->pll[pll_id];
+
+ /* All PLLs have same VCO and output frequency range restrictions. */
+ uint vco_hz = OSC_HZ / 1000 * div->fbdiv / div->refdiv * 1000;
+ uint output_hz = vco_hz / div->postdiv1 / div->postdiv2;
+
+ debug("PLL at %p:fd=%d,rd=%d,pd1=%d,pd2=%d,vco=%uHz,output=%uHz\n",
+ pll, div->fbdiv, div->refdiv, div->postdiv1,
+ div->postdiv2, vco_hz, output_hz);
+ assert(vco_hz >= VCO_MIN_HZ && vco_hz <= VCO_MAX_HZ &&
+ output_hz >= OUTPUT_MIN_HZ && output_hz <= OUTPUT_MAX_HZ);
+
+ /* use integer mode */
+ rk_setreg(&pll->con1, 1 << PLL_DSMPD_SHIFT);
+ /* Power down */
+ rk_setreg(&pll->con1, 1 << PLL_PD_SHIFT);
+
+ rk_clrsetreg(&pll->con0,
+ PLL_POSTDIV1_MASK | PLL_FBDIV_MASK,
+ (div->postdiv1 << PLL_POSTDIV1_SHIFT) | div->fbdiv);
+ rk_clrsetreg(&pll->con1, PLL_POSTDIV2_MASK | PLL_REFDIV_MASK,
+ (div->postdiv2 << PLL_POSTDIV2_SHIFT |
+ div->refdiv << PLL_REFDIV_SHIFT));
+
+ /* Power Up */
+ rk_clrreg(&pll->con1, 1 << PLL_PD_SHIFT);
+
+ /* waiting for pll lock */
+ while (readl(&pll->con1) & (1 << PLL_LOCK_STATUS_SHIFT))
+ udelay(1);
+
+ return 0;
+}
+
+static int pll_para_config(u32 freq_hz, struct pll_div *div)
+{
+ u32 ref_khz = OSC_HZ / 1000, 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;
+ u32 vco_khz;
+ u32 freq_khz = freq_hz / 1000;
+
+ if (!freq_hz) {
+ printf("%s: the frequency can't be 0 Hz\n", __func__);
+ return -1;
+ }
+
+ postdiv1 = DIV_ROUND_UP(VCO_MIN_HZ / 1000, 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_HZ / 1000) || vco_khz > (VCO_MAX_HZ / 1000) ||
+ postdiv2 > max_postdiv2) {
+ printf("%s: Cannot find out a supported VCO for Freq (%uHz)\n",
+ __func__, freq_hz);
+ return -1;
+ }
+
+ 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 * (1000)) {
+ printf("%s: Failed to match output frequency %u bestis %u Hz\n",
+ __func__, freq_hz,
+ best_diff_khz * 1000);
+ return -1;
+ }
+ return 0;
+}
+
+static void rkclk_init(struct rk3128_cru *cru)
+{
+ u32 aclk_div;
+ u32 hclk_div;
+ u32 pclk_div;
+
+ /* pll enter slow-mode */
+ rk_clrsetreg(&cru->cru_mode_con,
+ GPLL_MODE_MASK | APLL_MODE_MASK,
+ GPLL_MODE_SLOW << GPLL_MODE_SHIFT |
+ APLL_MODE_SLOW << APLL_MODE_SHIFT);
+
+ /* init pll */
+ rkclk_set_pll(cru, CLK_ARM, &apll_init_cfg);
+ rkclk_set_pll(cru, CLK_GENERAL, &gpll_init_cfg);
+
+ /*
+ * select apll as cpu/core clock pll source and
+ * set up dependent divisors for PERI and ACLK clocks.
+ * core hz : apll = 1:1
+ */
+ aclk_div = APLL_HZ / CORE_ACLK_HZ - 1;
+ assert((aclk_div + 1) * CORE_ACLK_HZ == APLL_HZ && aclk_div < 0x7);
+
+ pclk_div = APLL_HZ / CORE_PERI_HZ - 1;
+ assert((pclk_div + 1) * CORE_PERI_HZ == APLL_HZ && pclk_div < 0xf);
+
+ rk_clrsetreg(&cru->cru_clksel_con[0],
+ CORE_CLK_PLL_SEL_MASK | CORE_DIV_CON_MASK,
+ CORE_CLK_PLL_SEL_APLL << CORE_CLK_PLL_SEL_SHIFT |
+ 0 << CORE_DIV_CON_SHIFT);
+
+ rk_clrsetreg(&cru->cru_clksel_con[1],
+ CORE_ACLK_DIV_MASK | CORE_PERI_DIV_MASK,
+ aclk_div << CORE_ACLK_DIV_SHIFT |
+ pclk_div << CORE_PERI_DIV_SHIFT);
+
+ /*
+ * select gpll as pd_bus bus clock source and
+ * set up dependent divisors for PCLK/HCLK and ACLK clocks.
+ */
+ aclk_div = GPLL_HZ / BUS_ACLK_HZ - 1;
+ assert((aclk_div + 1) * BUS_ACLK_HZ == GPLL_HZ && aclk_div <= 0x1f);
+
+ pclk_div = BUS_ACLK_HZ / BUS_PCLK_HZ - 1;
+ assert((pclk_div + 1) * BUS_PCLK_HZ == BUS_ACLK_HZ && pclk_div <= 0x7);
+
+ hclk_div = BUS_ACLK_HZ / BUS_HCLK_HZ - 1;
+ assert((hclk_div + 1) * BUS_HCLK_HZ == BUS_ACLK_HZ && hclk_div <= 0x3);
+
+ rk_clrsetreg(&cru->cru_clksel_con[0],
+ BUS_ACLK_PLL_SEL_MASK | BUS_ACLK_DIV_MASK,
+ BUS_ACLK_PLL_SEL_GPLL << BUS_ACLK_PLL_SEL_SHIFT |
+ aclk_div << BUS_ACLK_DIV_SHIFT);
+
+ rk_clrsetreg(&cru->cru_clksel_con[1],
+ BUS_PCLK_DIV_MASK | BUS_HCLK_DIV_MASK,
+ pclk_div << BUS_PCLK_DIV_SHIFT |
+ hclk_div << BUS_HCLK_DIV_SHIFT);
+
+ /*
+ * select gpll as pd_peri bus clock source and
+ * set up dependent divisors for PCLK/HCLK and ACLK clocks.
+ */
+ aclk_div = GPLL_HZ / PERI_ACLK_HZ - 1;
+ assert((aclk_div + 1) * PERI_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
+
+ hclk_div = ilog2(PERI_ACLK_HZ / PERI_HCLK_HZ);
+ assert((1 << hclk_div) * PERI_HCLK_HZ ==
+ PERI_ACLK_HZ && (hclk_div < 0x4));
+
+ pclk_div = ilog2(PERI_ACLK_HZ / PERI_PCLK_HZ);
+ assert((1 << pclk_div) * PERI_PCLK_HZ ==
+ PERI_ACLK_HZ && pclk_div < 0x8);
+
+ rk_clrsetreg(&cru->cru_clksel_con[10],
+ PERI_PLL_SEL_MASK | PERI_PCLK_DIV_MASK |
+ PERI_HCLK_DIV_MASK | PERI_ACLK_DIV_MASK,
+ PERI_PLL_GPLL << PERI_PLL_SEL_SHIFT |
+ pclk_div << PERI_PCLK_DIV_SHIFT |
+ hclk_div << PERI_HCLK_DIV_SHIFT |
+ aclk_div << PERI_ACLK_DIV_SHIFT);
+
+ /* PLL enter normal-mode */
+ rk_clrsetreg(&cru->cru_mode_con,
+ GPLL_MODE_MASK | APLL_MODE_MASK | CPLL_MODE_MASK,
+ GPLL_MODE_NORM << GPLL_MODE_SHIFT |
+ APLL_MODE_NORM << APLL_MODE_SHIFT |
+ CPLL_MODE_NORM << CPLL_MODE_SHIFT);
+
+ /*fix NAND controller working clock max to 150Mhz */
+ rk_clrsetreg(&cru->cru_clksel_con[2],
+ NANDC_PLL_SEL_MASK | NANDC_CLK_DIV_MASK,
+ NANDC_PLL_SEL_GPLL << NANDC_PLL_SEL_SHIFT |
+ 3 << NANDC_CLK_DIV_SHIFT);
+}
+
+/* Get pll rate by id */
+static u32 rkclk_pll_get_rate(struct rk3128_cru *cru,
+ enum rk_clk_id clk_id)
+{
+ u32 refdiv, fbdiv, postdiv1, postdiv2;
+ u32 con;
+ int pll_id = rk_pll_id(clk_id);
+ struct rk3128_pll *pll = &cru->pll[pll_id];
+ static u8 clk_shift[CLK_COUNT] = {
+ 0xff, APLL_MODE_SHIFT, DPLL_MODE_SHIFT, CPLL_MODE_SHIFT,
+ GPLL_MODE_SHIFT, 0xff
+ };
+ static u32 clk_mask[CLK_COUNT] = {
+ 0xff, APLL_MODE_MASK, DPLL_MODE_MASK, CPLL_MODE_MASK,
+ GPLL_MODE_MASK, 0xff
+ };
+ uint shift;
+ uint mask;
+
+ con = readl(&cru->cru_mode_con);
+ shift = clk_shift[clk_id];
+ mask = clk_mask[clk_id];
+
+ switch ((con & mask) >> shift) {
+ case GPLL_MODE_SLOW:
+ return OSC_HZ;
+ case GPLL_MODE_NORM:
+ /* normal mode */
+ con = readl(&pll->con0);
+ postdiv1 = (con & PLL_POSTDIV1_MASK) >> PLL_POSTDIV1_SHIFT;
+ fbdiv = (con & PLL_FBDIV_MASK) >> PLL_FBDIV_SHIFT;
+ con = readl(&pll->con1);
+ postdiv2 = (con & PLL_POSTDIV2_MASK) >> PLL_POSTDIV2_SHIFT;
+ refdiv = (con & PLL_REFDIV_MASK) >> PLL_REFDIV_SHIFT;
+ return (24 * fbdiv / (refdiv * postdiv1 * postdiv2)) * 1000000;
+ case GPLL_MODE_DEEP:
+ default:
+ return 32768;
+ }
+}
+
+static ulong rockchip_mmc_get_clk(struct rk3128_cru *cru, uint clk_general_rate,
+ int periph)
+{
+ uint src_rate;
+ uint div, mux;
+ u32 con;
+
+ switch (periph) {
+ case HCLK_EMMC:
+ case SCLK_EMMC:
+ case SCLK_EMMC_SAMPLE:
+ con = readl(&cru->cru_clksel_con[12]);
+ mux = (con & EMMC_PLL_MASK) >> EMMC_PLL_SHIFT;
+ div = (con & EMMC_DIV_MASK) >> EMMC_DIV_SHIFT;
+ break;
+ case HCLK_SDMMC:
+ case SCLK_SDMMC:
+ con = readl(&cru->cru_clksel_con[11]);
+ mux = (con & MMC0_PLL_MASK) >> MMC0_PLL_SHIFT;
+ div = (con & MMC0_DIV_MASK) >> MMC0_DIV_SHIFT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ src_rate = mux == EMMC_SEL_24M ? OSC_HZ : clk_general_rate;
+ return DIV_TO_RATE(src_rate, div);
+}
+
+static ulong rockchip_mmc_set_clk(struct rk3128_cru *cru, uint clk_general_rate,
+ int periph, uint freq)
+{
+ int src_clk_div;
+ int mux;
+
+ debug("%s: clk_general_rate=%u\n", __func__, clk_general_rate);
+
+ /* mmc clock defaulg div 2 internal, need provide double in cru */
+ src_clk_div = DIV_ROUND_UP(clk_general_rate / 2, freq);
+
+ if (src_clk_div > 128) {
+ src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, freq);
+ mux = EMMC_SEL_24M;
+ } else {
+ mux = EMMC_SEL_GPLL;
+ }
+
+ switch (periph) {
+ case HCLK_EMMC:
+ rk_clrsetreg(&cru->cru_clksel_con[12],
+ EMMC_PLL_MASK | EMMC_DIV_MASK,
+ mux << EMMC_PLL_SHIFT |
+ (src_clk_div - 1) << EMMC_DIV_SHIFT);
+ break;
+ case HCLK_SDMMC:
+ case SCLK_SDMMC:
+ rk_clrsetreg(&cru->cru_clksel_con[11],
+ MMC0_PLL_MASK | MMC0_DIV_MASK,
+ mux << MMC0_PLL_SHIFT |
+ (src_clk_div - 1) << MMC0_DIV_SHIFT);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return rockchip_mmc_get_clk(cru, clk_general_rate, periph);
+}
+
+static ulong rk3128_peri_get_pclk(struct rk3128_cru *cru, ulong clk_id)
+{
+ u32 div, con;
+
+ switch (clk_id) {
+ case PCLK_I2C0:
+ case PCLK_I2C1:
+ case PCLK_I2C2:
+ case PCLK_I2C3:
+ case PCLK_PWM:
+ con = readl(&cru->cru_clksel_con[10]);
+ div = con >> 12 & 0x3;
+ break;
+ default:
+ printf("do not support this peripheral bus\n");
+ return -EINVAL;
+ }
+
+ return DIV_TO_RATE(PERI_ACLK_HZ, div);
+}
+
+static ulong rk3128_peri_set_pclk(struct rk3128_cru *cru, ulong clk_id, uint hz)
+{
+ int src_clk_div;
+
+ src_clk_div = PERI_ACLK_HZ / hz;
+ assert(src_clk_div - 1 < 4);
+
+ switch (clk_id) {
+ case PCLK_I2C0:
+ case PCLK_I2C1:
+ case PCLK_I2C2:
+ case PCLK_I2C3:
+ case PCLK_PWM:
+ rk_setreg(&cru->cru_clksel_con[10],
+ ((src_clk_div - 1) << 12));
+ break;
+ default:
+ printf("do not support this peripheral bus\n");
+ return -EINVAL;
+ }
+
+ return DIV_TO_RATE(PERI_ACLK_HZ, src_clk_div);
+}
+
+static ulong rk3128_saradc_get_clk(struct rk3128_cru *cru)
+{
+ u32 div, val;
+
+ val = readl(&cru->cru_clksel_con[24]);
+ div = bitfield_extract(val, SARADC_DIV_CON_SHIFT,
+ SARADC_DIV_CON_WIDTH);
+
+ return DIV_TO_RATE(OSC_HZ, div);
+}
+
+static ulong rk3128_saradc_set_clk(struct rk3128_cru *cru, uint hz)
+{
+ int src_clk_div;
+
+ src_clk_div = DIV_ROUND_UP(OSC_HZ, hz) - 1;
+ assert(src_clk_div < 128);
+
+ rk_clrsetreg(&cru->cru_clksel_con[24],
+ SARADC_DIV_CON_MASK,
+ src_clk_div << SARADC_DIV_CON_SHIFT);
+
+ return rk3128_saradc_get_clk(cru);
+}
+
+static ulong rk3128_vop_set_clk(struct rk3128_cru *cru, ulong clk_id, uint hz)
+{
+ int src_clk_div;
+ struct pll_div cpll_config = {0};
+
+ src_clk_div = GPLL_HZ / hz;
+ assert(src_clk_div - 1 < 31);
+
+ switch (clk_id) {
+ case ACLK_VIO0:
+ rk_clrsetreg(&cru->cru_clksel_con[31],
+ VIO0_PLL_MASK | VIO0_DIV_MASK,
+ VIO0_SEL_GPLL << VIO0_PLL_SHIFT |
+ (src_clk_div - 1) << VIO0_DIV_SHIFT);
+ break;
+ case ACLK_VIO1:
+ rk_clrsetreg(&cru->cru_clksel_con[31],
+ VIO1_PLL_MASK | VIO1_DIV_MASK,
+ VIO1_SEL_GPLL << VIO1_PLL_SHIFT |
+ (src_clk_div - 1) << VIO1_DIV_SHIFT);
+ break;
+ case DCLK_LCDC:
+ if (pll_para_config(hz, &cpll_config))
+ return -1;
+ rkclk_set_pll(cru, CLK_CODEC, &cpll_config);
+
+ rk_clrsetreg(&cru->cru_clksel_con[27],
+ DCLK_VOP_SEL_MASK | DCLK_VOP_DIV_CON_MASK,
+ DCLK_VOP_PLL_SEL_CPLL << DCLK_VOP_SEL_SHIFT |
+ (1 - 1) << DCLK_VOP_DIV_CON_SHIFT);
+ break;
+ default:
+ printf("do not support this vop freq\n");
+ return -EINVAL;
+ }
+
+ return hz;
+}
+
+static ulong rk3128_vop_get_rate(struct rk3128_cru *cru, ulong clk_id)
+{
+ u32 div, con, parent;
+
+ switch (clk_id) {
+ case ACLK_VIO0:
+ con = readl(&cru->cru_clksel_con[31]);
+ div = con & 0x1f;
+ parent = GPLL_HZ;
+ break;
+ case ACLK_VIO1:
+ con = readl(&cru->cru_clksel_con[31]);
+ div = (con >> 8) & 0x1f;
+ parent = GPLL_HZ;
+ break;
+ case DCLK_LCDC:
+ con = readl(&cru->cru_clksel_con[27]);
+ div = (con >> 8) & 0xfff;
+ parent = rkclk_pll_get_rate(cru, CLK_CODEC);
+ break;
+ default:
+ return -ENOENT;
+ }
+ return DIV_TO_RATE(parent, div);
+}
+
+static ulong rk3128_clk_get_rate(struct clk *clk)
+{
+ struct rk3128_clk_priv *priv = dev_get_priv(clk->dev);
+
+ switch (clk->id) {
+ case 0 ... 63:
+ return rkclk_pll_get_rate(priv->cru, clk->id);
+ case PCLK_I2C0:
+ case PCLK_I2C1:
+ case PCLK_I2C2:
+ case PCLK_I2C3:
+ case PCLK_PWM:
+ return rk3128_peri_get_pclk(priv->cru, clk->id);
+ case SCLK_SARADC:
+ return rk3128_saradc_get_clk(priv->cru);
+ case DCLK_LCDC:
+ case ACLK_VIO0:
+ case ACLK_VIO1:
+ return rk3128_vop_get_rate(priv->cru, clk->id);
+ default:
+ return -ENOENT;
+ }
+}
+
+static ulong rk3128_clk_set_rate(struct clk *clk, ulong rate)
+{
+ struct rk3128_clk_priv *priv = dev_get_priv(clk->dev);
+ ulong new_rate, gclk_rate;
+
+ gclk_rate = rkclk_pll_get_rate(priv->cru, CLK_GENERAL);
+ switch (clk->id) {
+ case 0 ... 63:
+ return 0;
+ case DCLK_LCDC:
+ case ACLK_VIO0:
+ case ACLK_VIO1:
+ new_rate = rk3128_vop_set_clk(priv->cru,
+ clk->id, rate);
+ break;
+ case HCLK_EMMC:
+ new_rate = rockchip_mmc_set_clk(priv->cru, gclk_rate,
+ clk->id, rate);
+ break;
+ case PCLK_I2C0:
+ case PCLK_I2C1:
+ case PCLK_I2C2:
+ case PCLK_I2C3:
+ case PCLK_PWM:
+ new_rate = rk3128_peri_set_pclk(priv->cru, clk->id, rate);
+ break;
+ case SCLK_SARADC:
+ new_rate = rk3128_saradc_set_clk(priv->cru, rate);
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ return new_rate;
+}
+
+static struct clk_ops rk3128_clk_ops = {
+ .get_rate = rk3128_clk_get_rate,
+ .set_rate = rk3128_clk_set_rate,
+};
+
+static int rk3128_clk_probe(struct udevice *dev)
+{
+ struct rk3128_clk_priv *priv = dev_get_priv(dev);
+
+ priv->cru = (struct rk3128_cru *)dev_read_addr(dev);
+ rkclk_init(priv->cru);
+
+ return 0;
+}
+
+static int rk3128_clk_bind(struct udevice *dev)
+{
+ int ret;
+ struct udevice *sys_child, *sf_child;
+ struct sysreset_reg *priv;
+ struct softreset_reg *sf_priv;
+
+ /* The reset driver does not have a device node, so bind it here */
+ ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
+ &sys_child);
+ if (ret) {
+ debug("Warning: No sysreset driver: ret=%d\n", ret);
+ } else {
+ priv = malloc(sizeof(struct sysreset_reg));
+ priv->glb_srst_fst_value = offsetof(struct rk3128_cru,
+ cru_glb_srst_fst_value);
+ priv->glb_srst_snd_value = offsetof(struct rk3128_cru,
+ cru_glb_srst_snd_value);
+ sys_child->priv = priv;
+ }
+
+ ret = device_bind_driver_to_node(dev, "rockchip_reset", "reset",
+ dev_ofnode(dev), &sf_child);
+ if (ret) {
+ debug("Warning: No rockchip reset driver: ret=%d\n", ret);
+ } else {
+ sf_priv = malloc(sizeof(struct softreset_reg));
+ sf_priv->sf_reset_offset = offsetof(struct rk3128_cru,
+ cru_softrst_con[0]);
+ sf_priv->sf_reset_num = 9;
+ sf_child->priv = sf_priv;
+ }
+
+ return 0;
+}
+
+static const struct udevice_id rk3128_clk_ids[] = {
+ { .compatible = "rockchip,rk3128-cru" },
+ { .compatible = "rockchip,rk3126-cru" },
+ { }
+};
+
+U_BOOT_DRIVER(rockchip_rk3128_cru) = {
+ .name = "clk_rk3128",
+ .id = UCLASS_CLK,
+ .of_match = rk3128_clk_ids,
+ .priv_auto_alloc_size = sizeof(struct rk3128_clk_priv),
+ .ops = &rk3128_clk_ops,
+ .bind = rk3128_clk_bind,
+ .probe = rk3128_clk_probe,
+};
--
1.9.1
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