rockchip: clk: Add rv1108 clock driver

Add clock driver support for Rockchip rv1108 soc

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

arch/arm/include/asm/arch-rockchip/cru_rv1108.h

@@ -0,0 +1,111 @@
+/*
+ * (C) Copyright 2016 Rockchip Electronics Co., Ltd
+ * Author: Andy Yan <andy.yan@rock-chips.com>
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+#ifndef _ASM_ARCH_CRU_RV1108_H
+#define _ASM_ARCH_CRU_RV1108_H
+
+#include <common.h>
+
+#define OSC_HZ		(24 * 1000 * 1000)
+
+#define APLL_HZ		(600 * 1000000)
+#define GPLL_HZ		(594 * 1000000)
+
+struct rv1108_clk_priv {
+	struct rv1108_cru *cru;
+	ulong rate;
+};
+
+struct rv1108_cru {
+	struct rv1108_pll {
+		unsigned int con0;
+		unsigned int con1;
+		unsigned int con2;
+		unsigned int con3;
+		unsigned int con4;
+		unsigned int con5;
+		unsigned int reserved[2];
+	} pll[3];
+	unsigned int clksel_con[46];
+	unsigned int reserved1[2];
+	unsigned int clkgate_con[20];
+	unsigned int reserved2[4];
+	unsigned int softrst_con[13];
+	unsigned int reserved3[3];
+	unsigned int glb_srst_fst_val;
+	unsigned int glb_srst_snd_val;
+	unsigned int glb_cnt_th;
+	unsigned int misc_con;
+	unsigned int glb_rst_con;
+	unsigned int glb_rst_st;
+	unsigned int sdmmc_con[2];
+	unsigned int sdio_con[2];
+	unsigned int emmc_con[2];
+};
+check_member(rv1108_cru, emmc_con[1], 0x01ec);
+
+struct pll_div {
+	u32 refdiv;
+	u32 fbdiv;
+	u32 postdiv1;
+	u32 postdiv2;
+	u32 frac;
+};
+
+enum {
+	/* PLL CON0 */
+	FBDIV_MASK		= 0xfff,
+	FBDIV_SHIFT		= 0,
+
+	/* PLL CON1 */
+	POSTDIV2_SHIFT          = 12,
+	POSTDIV2_MASK		= 7 << POSTDIV2_SHIFT,
+	POSTDIV1_SHIFT          = 8,
+	POSTDIV1_MASK		= 7 << POSTDIV1_SHIFT,
+	REFDIV_MASK		= 0x3f,
+	REFDIV_SHIFT		= 0,
+
+	/* PLL CON2 */
+	LOCK_STA_SHIFT          = 31,
+	LOCK_STA_MASK		= 1 << LOCK_STA_SHIFT,
+	FRACDIV_MASK		= 0xffffff,
+	FRACDIV_SHIFT		= 0,
+
+	/* PLL CON3 */
+	WORK_MODE_SHIFT         = 8,
+	WORK_MODE_MASK		= 1 << WORK_MODE_SHIFT,
+	WORK_MODE_SLOW		= 0,
+	WORK_MODE_NORMAL	= 1,
+	DSMPD_SHIFT             = 3,
+	DSMPD_MASK		= 1 << DSMPD_SHIFT,
+
+	/* CLKSEL0_CON */
+	CORE_PLL_SEL_SHIFT	= 8,
+	CORE_PLL_SEL_MASK	= 3 << CORE_PLL_SEL_SHIFT,
+	CORE_PLL_SEL_APLL	= 0,
+	CORE_PLL_SEL_GPLL	= 1,
+	CORE_PLL_SEL_DPLL	= 2,
+	CORE_CLK_DIV_SHIFT	= 0,
+	CORE_CLK_DIV_MASK	= 0x1f << CORE_CLK_DIV_SHIFT,
+
+	/* CLKSEL24_CON */
+	MAC_PLL_SEL_SHIFT	= 12,
+	MAC_PLL_SEL_MASK	= 1 << MAC_PLL_SEL_SHIFT,
+	MAC_PLL_SEL_APLL	= 0,
+	MAC_PLL_SEL_GPLL	= 1,
+	RMII_EXTCLK_SEL_SHIFT   = 8,
+	RMII_EXTCLK_SEL_MASK	= 1 << RMII_EXTCLK_SEL_SHIFT,
+	MAC_CLK_DIV_MASK	= 0x1f,
+	MAC_CLK_DIV_SHIFT	= 0,
+
+	/* CLKSEL27_CON */
+	SFC_PLL_SEL_SHIFT	= 7,
+	SFC_PLL_SEL_MASK	= 1 << SFC_PLL_SEL_SHIFT,
+	SFC_PLL_SEL_DPLL	= 0,
+	SFC_PLL_SEL_GPLL	= 1,
+	SFC_CLK_DIV_SHIFT	= 0,
+	SFC_CLK_DIV_MASK	= 0x3f << SFC_CLK_DIV_SHIFT,
+};
+#endif

arch/arm/include/asm/arch-rockchip/periph.h

@@ -42,6 +42,7 @@ enum periph_id {
 	PERIPH_ID_SDMMC2,
 	PERIPH_ID_HDMI,
 	PERIPH_ID_GMAC,
+	PERIPH_ID_SFC,
 
 	PERIPH_ID_COUNT,
 

drivers/clk/rockchip/Makefile

@@ -10,3 +10,4 @@ obj-$(CONFIG_ROCKCHIP_RK3288) += clk_rk3288.o
 obj-$(CONFIG_ROCKCHIP_RK3328) += clk_rk3328.o
 obj-$(CONFIG_ROCKCHIP_RK3368) += clk_rk3368.o
 obj-$(CONFIG_ROCKCHIP_RK3399) += clk_rk3399.o
+obj-$(CONFIG_ROCKCHIP_RV1108) += clk_rv1108.o

drivers/clk/rockchip/clk_rv1108.c

@@ -0,0 +1,223 @@
+/*
+ * (C) Copyright 2016 Rockchip Electronics Co., Ltd
+ * Author: Andy Yan <andy.yan@rock-chips.com>
+ * 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_rv1108.h>
+#include <asm/arch/hardware.h>
+#include <dm/lists.h>
+#include <dt-bindings/clock/rv1108-cru.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 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_assert(((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ) *\
+			 OSC_HZ / (_refdiv * _postdiv1 * _postdiv2) == hz,\
+			 #hz "Hz cannot be hit with PLL "\
+			 "divisors on line " __stringify(__LINE__));
+
+/* use interge 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 inline int rv1108_pll_id(enum rk_clk_id clk_id)
+{
+	int id = 0;
+
+	switch (clk_id) {
+	case CLK_ARM:
+	case CLK_DDR:
+		id = clk_id - 1;
+		break;
+	case CLK_GENERAL:
+		id = 2;
+		break;
+	default:
+		printf("invalid pll id:%d\n", clk_id);
+		id = -1;
+		break;
+	}
+
+	return id;
+}
+
+static uint32_t rkclk_pll_get_rate(struct rv1108_cru *cru,
+				   enum rk_clk_id clk_id)
+{
+	uint32_t refdiv, fbdiv, postdiv1, postdiv2;
+	uint32_t con0, con1, con3;
+	int pll_id = rv1108_pll_id(clk_id);
+	struct rv1108_pll *pll = &cru->pll[pll_id];
+	uint32_t freq;
+
+	con3 = readl(&pll->con3);
+
+	if (con3 & WORK_MODE_MASK) {
+		con0 = readl(&pll->con0);
+		con1 = readl(&pll->con1);
+		fbdiv = (con0 >> FBDIV_SHIFT) & FBDIV_MASK;
+		postdiv1 = (con1 & POSTDIV1_MASK) >> POSTDIV1_SHIFT;
+		postdiv2 = (con1 & POSTDIV2_MASK) >> POSTDIV2_SHIFT;
+		refdiv = (con1 & REFDIV_MASK) >> REFDIV_SHIFT;
+		freq = (24 * fbdiv / (refdiv * postdiv1 * postdiv2)) * 1000000;
+	} else {
+		freq = OSC_HZ;
+	}
+
+	return freq;
+}
+
+static int rv1108_mac_set_clk(struct rv1108_cru *cru, ulong rate)
+{
+	uint32_t con = readl(&cru->clksel_con[24]);
+	ulong pll_rate;
+	uint8_t div;
+
+	if ((con >> MAC_PLL_SEL_SHIFT) & MAC_PLL_SEL_GPLL)
+		pll_rate = rkclk_pll_get_rate(cru, CLK_GENERAL);
+	else
+		pll_rate = rkclk_pll_get_rate(cru, CLK_ARM);
+
+	/*default set 50MHZ for gmac*/
+	if (!rate)
+		rate = 50000000;
+
+	div = DIV_ROUND_UP(pll_rate, rate) - 1;
+	if (div <= 0x1f)
+		rk_clrsetreg(&cru->clksel_con[24], MAC_CLK_DIV_MASK,
+			     div << MAC_CLK_DIV_SHIFT);
+	else
+		debug("Unsupported div for gmac:%d\n", div);
+
+	return DIV_TO_RATE(pll_rate, div);
+}
+
+static int rv1108_sfc_set_clk(struct rv1108_cru *cru, uint rate)
+{
+	u32 con = readl(&cru->clksel_con[27]);
+	u32 pll_rate;
+	u32 div;
+
+	if ((con >> SFC_PLL_SEL_SHIFT) && SFC_PLL_SEL_GPLL)
+		pll_rate = rkclk_pll_get_rate(cru, CLK_GENERAL);
+	else
+		pll_rate = rkclk_pll_get_rate(cru, CLK_DDR);
+
+	div = DIV_ROUND_UP(pll_rate, rate) - 1;
+	if (div <= 0x3f)
+		rk_clrsetreg(&cru->clksel_con[27], SFC_CLK_DIV_MASK,
+			     div << SFC_CLK_DIV_SHIFT);
+	else
+		debug("Unsupported sfc clk rate:%d\n", rate);
+
+	return DIV_TO_RATE(pll_rate, div);
+}
+
+static ulong rv1108_clk_get_rate(struct clk *clk)
+{
+	struct rv1108_clk_priv *priv = dev_get_priv(clk->dev);
+
+	switch (clk->id) {
+	case 0 ... 63:
+		return rkclk_pll_get_rate(priv->cru, clk->id);
+	default:
+		return -ENOENT;
+	}
+}
+
+static ulong rv1108_clk_set_rate(struct clk *clk, ulong rate)
+{
+	struct rv1108_clk_priv *priv = dev_get_priv(clk->dev);
+	ulong new_rate;
+
+	switch (clk->id) {
+	case SCLK_MAC:
+		new_rate = rv1108_mac_set_clk(priv->cru, rate);
+		break;
+	case SCLK_SFC:
+		new_rate = rv1108_sfc_set_clk(priv->cru, rate);
+		break;
+	default:
+		return -ENOENT;
+	}
+
+	return new_rate;
+}
+
+static const struct clk_ops rv1108_clk_ops = {
+	.get_rate	= rv1108_clk_get_rate,
+	.set_rate	= rv1108_clk_set_rate,
+};
+
+static void rkclk_init(struct rv1108_cru *cru)
+{
+	unsigned int apll = rkclk_pll_get_rate(cru, CLK_ARM);
+	unsigned int dpll = rkclk_pll_get_rate(cru, CLK_DDR);
+	unsigned int gpll = rkclk_pll_get_rate(cru, CLK_GENERAL);
+
+	rk_clrsetreg(&cru->clksel_con[0], CORE_CLK_DIV_MASK,
+		     0 << MAC_CLK_DIV_SHIFT);
+
+	printf("APLL: %d DPLL:%d GPLL:%d\n", apll, dpll, gpll);
+}
+
+static int rv1108_clk_probe(struct udevice *dev)
+{
+	struct rv1108_clk_priv *priv = dev_get_priv(dev);
+
+	priv->cru = (struct rv1108_cru *)devfdt_get_addr(dev);
+
+	rkclk_init(priv->cru);
+
+	return 0;
+}
+
+static int rv1108_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, "rv1108_sysreset", "reset", &dev);
+	if (ret)
+		error("No Rv1108 reset driver: ret=%d\n", ret);
+
+	return 0;
+}
+
+static const struct udevice_id rv1108_clk_ids[] = {
+	{ .compatible = "rockchip,rv1108-cru" },
+	{ }
+};
+
+U_BOOT_DRIVER(clk_rv1108) = {
+	.name		= "clk_rv1108",
+	.id		= UCLASS_CLK,
+	.of_match	= rv1108_clk_ids,
+	.priv_auto_alloc_size = sizeof(struct rv1108_clk_priv),
+	.ops		= &rv1108_clk_ops,
+	.bind		= rv1108_clk_bind,
+	.probe		= rv1108_clk_probe,
+};

include/dt-bindings/clock/rv1108-cru.h

@@ -0,0 +1,269 @@
+/*
+ * Copyright (c) 2017 Rockchip Electronics Co. Ltd.
+ * Author: Shawn Lin <shawn.lin@rock-chips.com>
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef _DT_BINDINGS_CLK_ROCKCHIP_RV1108_H
+#define _DT_BINDINGS_CLK_ROCKCHIP_RV1108_H
+
+/* pll id */
+#define PLL_APLL			0
+#define PLL_DPLL			1
+#define PLL_GPLL			2
+#define ARMCLK				3
+
+/* sclk gates (special clocks) */
+#define SCLK_MAC			64
+#define SCLK_SPI0			65
+#define SCLK_NANDC			67
+#define SCLK_SDMMC			68
+#define SCLK_SDIO			69
+#define SCLK_EMMC			71
+#define SCLK_UART0			72
+#define SCLK_UART1			73
+#define SCLK_UART2			74
+#define SCLK_I2S0			75
+#define SCLK_I2S1			76
+#define SCLK_I2S2			77
+#define SCLK_TIMER0			78
+#define SCLK_TIMER1			79
+#define SCLK_SFC			80
+#define SCLK_SDMMC_DRV			81
+#define SCLK_SDIO_DRV			82
+#define SCLK_EMMC_DRV			83
+#define SCLK_SDMMC_SAMPLE		84
+#define SCLK_SDIO_SAMPLE		85
+#define SCLK_EMMC_SAMPLE		86
+#define SCLK_MAC_RX			87
+#define SCLK_MAC_TX			88
+#define SCLK_MACREF			89
+#define SCLK_MACREF_OUT			90
+
+
+/* aclk gates */
+#define ACLK_DMAC			192
+#define ACLK_PRE			193
+#define ACLK_CORE			194
+#define ACLK_ENMCORE			195
+#define ACLK_GMAC			196
+
+
+/* pclk gates */
+#define PCLK_GPIO1			256
+#define PCLK_GPIO2			257
+#define PCLK_GPIO3			258
+#define PCLK_GRF			259
+#define PCLK_I2C1			260
+#define PCLK_I2C2			261
+#define PCLK_I2C3			262
+#define PCLK_SPI			263
+#define PCLK_SFC			264
+#define PCLK_UART0			265
+#define PCLK_UART1			266
+#define PCLK_UART2			267
+#define PCLK_TSADC			268
+#define PCLK_PWM			269
+#define PCLK_TIMER			270
+#define PCLK_PERI			271
+#define PCLK_GMAC			272
+
+/* hclk gates */
+#define HCLK_I2S0_8CH			320
+#define HCLK_I2S1_8CH			321
+#define HCLK_I2S2_2CH			322
+#define HCLK_NANDC			323
+#define HCLK_SDMMC			324
+#define HCLK_SDIO			325
+#define HCLK_EMMC			326
+#define HCLK_PERI			327
+#define HCLK_SFC			328
+
+#define CLK_NR_CLKS			(HCLK_SFC + 1)
+
+/* reset id */
+#define SRST_CORE_PO_AD		0
+#define SRST_CORE_AD			1
+#define SRST_L2_AD			2
+#define SRST_CPU_NIU_AD		3
+#define SRST_CORE_PO			4
+#define SRST_CORE			5
+#define SRST_L2			6
+#define SRST_CORE_DBG			8
+#define PRST_DBG			9
+#define RST_DAP			10
+#define PRST_DBG_NIU			11
+#define ARST_STRC_SYS_AD		15
+
+#define SRST_DDRPHY_CLKDIV		16
+#define SRST_DDRPHY			17
+#define PRST_DDRPHY			18
+#define PRST_HDMIPHY			19
+#define PRST_VDACPHY			20
+#define PRST_VADCPHY			21
+#define PRST_MIPI_CSI_PHY		22
+#define PRST_MIPI_DSI_PHY		23
+#define PRST_ACODEC			24
+#define ARST_BUS_NIU			25
+#define PRST_TOP_NIU			26
+#define ARST_INTMEM			27
+#define HRST_ROM			28
+#define ARST_DMAC			29
+#define SRST_MSCH_NIU			30
+#define PRST_MSCH_NIU			31
+
+#define PRST_DDRUPCTL			32
+#define NRST_DDRUPCTL			33
+#define PRST_DDRMON			34
+#define HRST_I2S0_8CH			35
+#define MRST_I2S0_8CH			36
+#define HRST_I2S1_2CH			37
+#define MRST_IS21_2CH			38
+#define HRST_I2S2_2CH			39
+#define MRST_I2S2_2CH			40
+#define HRST_CRYPTO			41
+#define SRST_CRYPTO			42
+#define PRST_SPI			43
+#define SRST_SPI			44
+#define PRST_UART0			45
+#define PRST_UART1			46
+#define PRST_UART2			47
+
+#define SRST_UART0			48
+#define SRST_UART1			49
+#define SRST_UART2			50
+#define PRST_I2C1			51
+#define PRST_I2C2			52
+#define PRST_I2C3			53
+#define SRST_I2C1			54
+#define SRST_I2C2			55
+#define SRST_I2C3			56
+#define PRST_PWM1			58
+#define SRST_PWM1			60
+#define PRST_WDT			61
+#define PRST_GPIO1			62
+#define PRST_GPIO2			63
+
+#define PRST_GPIO3			64
+#define PRST_GRF			65
+#define PRST_EFUSE			66
+#define PRST_EFUSE512			67
+#define PRST_TIMER0			68
+#define SRST_TIMER0			69
+#define SRST_TIMER1			70
+#define PRST_TSADC			71
+#define SRST_TSADC			72
+#define PRST_SARADC			73
+#define SRST_SARADC			74
+#define HRST_SYSBUS			75
+#define PRST_USBGRF			76
+
+#define ARST_PERIPH_NIU		80
+#define HRST_PERIPH_NIU		81
+#define PRST_PERIPH_NIU		82
+#define HRST_PERIPH			83
+#define HRST_SDMMC			84
+#define HRST_SDIO			85
+#define HRST_EMMC			86
+#define HRST_NANDC			87
+#define NRST_NANDC			88
+#define HRST_SFC			89
+#define SRST_SFC			90
+#define ARST_GMAC			91
+#define HRST_OTG			92
+#define SRST_OTG			93
+#define SRST_OTG_ADP			94
+#define HRST_HOST0			95
+
+#define HRST_HOST0_AUX			96
+#define HRST_HOST0_ARB			97
+#define SRST_HOST0_EHCIPHY		98
+#define SRST_HOST0_UTMI		99
+#define SRST_USBPOR			100
+#define SRST_UTMI0			101
+#define SRST_UTMI1			102
+
+#define ARST_VIO0_NIU			102
+#define ARST_VIO1_NIU			103
+#define HRST_VIO_NIU			104
+#define PRST_VIO_NIU			105
+#define ARST_VOP			106
+#define HRST_VOP			107
+#define DRST_VOP			108
+#define ARST_IEP			109
+#define HRST_IEP			110
+#define ARST_RGA			111
+#define HRST_RGA			112
+#define SRST_RGA			113
+#define PRST_CVBS			114
+#define PRST_HDMI			115
+#define SRST_HDMI			116
+#define PRST_MIPI_DSI			117
+
+#define ARST_ISP_NIU			118
+#define HRST_ISP_NIU			119
+#define HRST_ISP			120
+#define SRST_ISP			121
+#define ARST_VIP0			122
+#define HRST_VIP0			123
+#define PRST_VIP0			124
+#define ARST_VIP1			125
+#define HRST_VIP1			126
+#define PRST_VIP1			127
+#define ARST_VIP2			128
+#define HRST_VIP2			129
+#define PRST_VIP2			120
+#define ARST_VIP3			121
+#define HRST_VIP3			122
+#define PRST_VIP4			123
+
+#define PRST_CIF1TO4			124
+#define SRST_CVBS_CLK			125
+#define HRST_CVBS			126
+
+#define ARST_VPU_NIU			140
+#define HRST_VPU_NIU			141
+#define ARST_VPU			142
+#define HRST_VPU			143
+#define ARST_RKVDEC_NIU		144
+#define HRST_RKVDEC_NIU		145
+#define ARST_RKVDEC			146
+#define HRST_RKVDEC			147
+#define SRST_RKVDEC_CABAC		148
+#define SRST_RKVDEC_CORE		149
+#define ARST_RKVENC_NIU		150
+#define HRST_RKVENC_NIU		151
+#define ARST_RKVENC			152
+#define HRST_RKVENC			153
+#define SRST_RKVENC_CORE		154
+
+#define SRST_DSP_CORE			156
+#define SRST_DSP_SYS			157
+#define SRST_DSP_GLOBAL		158
+#define SRST_DSP_OECM			159
+#define PRST_DSP_IOP_NIU		160
+#define ARST_DSP_EPP_NIU		161
+#define ARST_DSP_EDP_NIU		162
+#define PRST_DSP_DBG_NIU		163
+#define PRST_DSP_CFG_NIU		164
+#define PRST_DSP_GRF			165
+#define PRST_DSP_MAILBOX		166
+#define PRST_DSP_INTC			167
+#define PRST_DSP_PFM_MON		169
+#define SRST_DSP_PFM_MON		170
+#define ARST_DSP_EDAP_NIU		171
+
+#define SRST_PMU			172
+#define SRST_PMU_I2C0			173
+#define PRST_PMU_I2C0			174
+#define PRST_PMU_GPIO0			175
+#define PRST_PMU_INTMEM		176
+#define PRST_PMU_PWM0			177
+#define SRST_PMU_PWM0			178
+#define PRST_PMU_GRF			179
+#define SRST_PMU_NIU			180
+#define SRST_PMU_PVTM			181
+#define ARST_DSP_EDP_PERF		184
+#define ARST_DSP_EPP_PERF		185
+
+#endif /* _DT_BINDINGS_CLK_ROCKCHIP_RV1108_H */