[PATCH 4/4] phy: rockchip: add Innosilicon MIPI/LVDS/TTL PHY driver

[Ahmad Fatoum <a.fatoum@barebox.org>]

This driver was tested in conjunction with the upcoming VOP2 MIPI-DSI
support on an rk3566 to drive a Powkiddy RGB30's DSI panel.

Signed-off-by: Ahmad Fatoum <a.fatoum@barebox.org>
---
 drivers/phy/rockchip/Kconfig                  |   9 +
 drivers/phy/rockchip/Makefile                 |   1 +
 .../phy/rockchip/phy-rockchip-inno-dsidphy.c  | 764 ++++++++++++++++++
 3 files changed, 774 insertions(+)
 create mode 100644 drivers/phy/rockchip/phy-rockchip-inno-dsidphy.c

diff --git a/drivers/phy/rockchip/Kconfig b/drivers/phy/rockchip/Kconfig
index 013c738c6d03..1d9f02b43429 100644
--- a/drivers/phy/rockchip/Kconfig
+++ b/drivers/phy/rockchip/Kconfig
@@ -1,4 +1,13 @@
 # SPDX-License-Identifier: GPL-2.0-only
+
+config PHY_ROCKCHIP_INNO_DSIDPHY
+	tristate "Rockchip Innosilicon MIPI/LVDS/TTL PHY driver"
+	depends on (ARCH_ROCKCHIP || COMPILE_TEST) && OF
+	select GENERIC_PHY_MIPI_DPHY
+	help
+	  Enable this to support the Rockchip MIPI/LVDS/TTL PHY with
+	  Innosilicon IP block.
+
 config PHY_ROCKCHIP_INNO_USB2
 	bool "Rockchip INNO USB2PHY Driver"
 	depends on (ARCH_ROCKCHIP || COMPILE_TEST) && OFDEVICE
diff --git a/drivers/phy/rockchip/Makefile b/drivers/phy/rockchip/Makefile
index 96775a993015..4a2173fd69ef 100644
--- a/drivers/phy/rockchip/Makefile
+++ b/drivers/phy/rockchip/Makefile
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_PHY_ROCKCHIP_INNO_DSIDPHY)	+= phy-rockchip-inno-dsidphy.o
 obj-$(CONFIG_PHY_ROCKCHIP_INNO_USB2) += phy-rockchip-inno-usb2.o
 obj-$(CONFIG_PHY_ROCKCHIP_NANENG_COMBO_PHY) += phy-rockchip-naneng-combphy.o
 obj-$(CONFIG_PHY_ROCKCHIP_SNPS_PCIE3) += phy-rockchip-snps-pcie3.o
diff --git a/drivers/phy/rockchip/phy-rockchip-inno-dsidphy.c b/drivers/phy/rockchip/phy-rockchip-inno-dsidphy.c
new file mode 100644
index 000000000000..5a929dc97291
--- /dev/null
+++ b/drivers/phy/rockchip/phy-rockchip-inno-dsidphy.c
@@ -0,0 +1,764 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 Rockchip Electronics Co. Ltd.
+ *
+ * Author: Wyon Bi <bivvy.bi@rock-chips.com>
+ */
+
+#include <linux/bits.h>
+#include <linux/kernel.h>
+#include <linux/clk.h>
+#include <linux/iopoll.h>
+#include <linux/clk-provider.h>
+#include <clock.h>
+#include <init.h>
+#include <mfd/syscon.h>
+#include <linux/module.h>
+#include <of.h>
+#include <linux/device.h>
+#include <linux/reset.h>
+#include <linux/time64.h>
+
+#include <linux/phy/phy.h>
+#include <linux/phy/phy-mipi-dphy.h>
+
+#define UPDATE(x, h, l)	(((x) << (l)) & GENMASK((h), (l)))
+
+/*
+ * The offset address[7:0] is distributed two parts, one from the bit7 to bit5
+ * is the first address, the other from the bit4 to bit0 is the second address.
+ * when you configure the registers, you must set both of them. The Clock Lane
+ * and Data Lane use the same registers with the same second address, but the
+ * first address is different.
+ */
+#define FIRST_ADDRESS(x)		(((x) & 0x7) << 5)
+#define SECOND_ADDRESS(x)		(((x) & 0x1f) << 0)
+#define PHY_REG(first, second)		(FIRST_ADDRESS(first) | \
+					 SECOND_ADDRESS(second))
+
+/* Analog Register Part: reg00 */
+#define BANDGAP_POWER_MASK			BIT(7)
+#define BANDGAP_POWER_DOWN			BIT(7)
+#define BANDGAP_POWER_ON			0
+#define LANE_EN_MASK				GENMASK(6, 2)
+#define LANE_EN_CK				BIT(6)
+#define LANE_EN_3				BIT(5)
+#define LANE_EN_2				BIT(4)
+#define LANE_EN_1				BIT(3)
+#define LANE_EN_0				BIT(2)
+#define POWER_WORK_MASK				GENMASK(1, 0)
+#define POWER_WORK_ENABLE			UPDATE(1, 1, 0)
+#define POWER_WORK_DISABLE			UPDATE(2, 1, 0)
+/* Analog Register Part: reg01 */
+#define REG_SYNCRST_MASK			BIT(2)
+#define REG_SYNCRST_RESET			BIT(2)
+#define REG_SYNCRST_NORMAL			0
+#define REG_LDOPD_MASK				BIT(1)
+#define REG_LDOPD_POWER_DOWN			BIT(1)
+#define REG_LDOPD_POWER_ON			0
+#define REG_PLLPD_MASK				BIT(0)
+#define REG_PLLPD_POWER_DOWN			BIT(0)
+#define REG_PLLPD_POWER_ON			0
+/* Analog Register Part: reg03 */
+#define REG_FBDIV_HI_MASK			BIT(5)
+#define REG_FBDIV_HI(x)				UPDATE((x >> 8), 5, 5)
+#define REG_PREDIV_MASK				GENMASK(4, 0)
+#define REG_PREDIV(x)				UPDATE(x, 4, 0)
+/* Analog Register Part: reg04 */
+#define REG_FBDIV_LO_MASK			GENMASK(7, 0)
+#define REG_FBDIV_LO(x)				UPDATE(x, 7, 0)
+/* Analog Register Part: reg05 */
+#define SAMPLE_CLOCK_PHASE_MASK			GENMASK(6, 4)
+#define SAMPLE_CLOCK_PHASE(x)			UPDATE(x, 6, 4)
+#define CLOCK_LANE_SKEW_PHASE_MASK		GENMASK(2, 0)
+#define CLOCK_LANE_SKEW_PHASE(x)		UPDATE(x, 2, 0)
+/* Analog Register Part: reg06 */
+#define DATA_LANE_3_SKEW_PHASE_MASK		GENMASK(6, 4)
+#define DATA_LANE_3_SKEW_PHASE(x)		UPDATE(x, 6, 4)
+#define DATA_LANE_2_SKEW_PHASE_MASK		GENMASK(2, 0)
+#define DATA_LANE_2_SKEW_PHASE(x)		UPDATE(x, 2, 0)
+/* Analog Register Part: reg07 */
+#define DATA_LANE_1_SKEW_PHASE_MASK		GENMASK(6, 4)
+#define DATA_LANE_1_SKEW_PHASE(x)		UPDATE(x, 6, 4)
+#define DATA_LANE_0_SKEW_PHASE_MASK		GENMASK(2, 0)
+#define DATA_LANE_0_SKEW_PHASE(x)		UPDATE(x, 2, 0)
+/* Analog Register Part: reg08 */
+#define PLL_POST_DIV_ENABLE_MASK		BIT(5)
+#define PLL_POST_DIV_ENABLE			BIT(5)
+#define SAMPLE_CLOCK_DIRECTION_MASK		BIT(4)
+#define SAMPLE_CLOCK_DIRECTION_REVERSE		BIT(4)
+#define SAMPLE_CLOCK_DIRECTION_FORWARD		0
+#define LOWFRE_EN_MASK				BIT(5)
+#define PLL_OUTPUT_FREQUENCY_DIV_BY_1		0
+#define PLL_OUTPUT_FREQUENCY_DIV_BY_2		1
+/* Analog Register Part: reg0b */
+#define CLOCK_LANE_VOD_RANGE_SET_MASK		GENMASK(3, 0)
+#define CLOCK_LANE_VOD_RANGE_SET(x)		UPDATE(x, 3, 0)
+#define VOD_MIN_RANGE				0x1
+#define VOD_MID_RANGE				0x3
+#define VOD_BIG_RANGE				0x7
+#define VOD_MAX_RANGE				0xf
+/* Analog Register Part: reg1E */
+#define PLL_MODE_SEL_MASK			GENMASK(6, 5)
+#define PLL_MODE_SEL_LVDS_MODE			0
+#define PLL_MODE_SEL_MIPI_MODE			BIT(5)
+/* Digital Register Part: reg00 */
+#define REG_DIG_RSTN_MASK			BIT(0)
+#define REG_DIG_RSTN_NORMAL			BIT(0)
+#define REG_DIG_RSTN_RESET			0
+/* Digital Register Part: reg01 */
+#define INVERT_TXCLKESC_MASK			BIT(1)
+#define INVERT_TXCLKESC_ENABLE			BIT(1)
+#define INVERT_TXCLKESC_DISABLE			0
+#define INVERT_TXBYTECLKHS_MASK			BIT(0)
+#define INVERT_TXBYTECLKHS_ENABLE		BIT(0)
+#define INVERT_TXBYTECLKHS_DISABLE		0
+/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg05 */
+#define T_LPX_CNT_MASK				GENMASK(5, 0)
+#define T_LPX_CNT(x)				UPDATE(x, 5, 0)
+/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg06 */
+#define T_HS_ZERO_CNT_HI_MASK			BIT(7)
+#define T_HS_ZERO_CNT_HI(x)			UPDATE(x, 7, 7)
+#define T_HS_PREPARE_CNT_MASK			GENMASK(6, 0)
+#define T_HS_PREPARE_CNT(x)			UPDATE(x, 6, 0)
+/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg07 */
+#define T_HS_ZERO_CNT_LO_MASK			GENMASK(5, 0)
+#define T_HS_ZERO_CNT_LO(x)			UPDATE(x, 5, 0)
+/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg08 */
+#define T_HS_TRAIL_CNT_MASK			GENMASK(6, 0)
+#define T_HS_TRAIL_CNT(x)			UPDATE(x, 6, 0)
+/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg09 */
+#define T_HS_EXIT_CNT_LO_MASK			GENMASK(4, 0)
+#define T_HS_EXIT_CNT_LO(x)			UPDATE(x, 4, 0)
+/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg0a */
+#define T_CLK_POST_CNT_LO_MASK			GENMASK(3, 0)
+#define T_CLK_POST_CNT_LO(x)			UPDATE(x, 3, 0)
+/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg0c */
+#define LPDT_TX_PPI_SYNC_MASK			BIT(2)
+#define LPDT_TX_PPI_SYNC_ENABLE			BIT(2)
+#define LPDT_TX_PPI_SYNC_DISABLE		0
+#define T_WAKEUP_CNT_HI_MASK			GENMASK(1, 0)
+#define T_WAKEUP_CNT_HI(x)			UPDATE(x, 1, 0)
+/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg0d */
+#define T_WAKEUP_CNT_LO_MASK			GENMASK(7, 0)
+#define T_WAKEUP_CNT_LO(x)			UPDATE(x, 7, 0)
+/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg0e */
+#define T_CLK_PRE_CNT_MASK			GENMASK(3, 0)
+#define T_CLK_PRE_CNT(x)			UPDATE(x, 3, 0)
+/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg10 */
+#define T_CLK_POST_CNT_HI_MASK			GENMASK(7, 6)
+#define T_CLK_POST_CNT_HI(x)			UPDATE(x, 7, 6)
+#define T_TA_GO_CNT_MASK			GENMASK(5, 0)
+#define T_TA_GO_CNT(x)				UPDATE(x, 5, 0)
+/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg11 */
+#define T_HS_EXIT_CNT_HI_MASK			BIT(6)
+#define T_HS_EXIT_CNT_HI(x)			UPDATE(x, 6, 6)
+#define T_TA_SURE_CNT_MASK			GENMASK(5, 0)
+#define T_TA_SURE_CNT(x)			UPDATE(x, 5, 0)
+/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg12 */
+#define T_TA_WAIT_CNT_MASK			GENMASK(5, 0)
+#define T_TA_WAIT_CNT(x)			UPDATE(x, 5, 0)
+/* LVDS Register Part: reg00 */
+#define LVDS_DIGITAL_INTERNAL_RESET_MASK	BIT(2)
+#define LVDS_DIGITAL_INTERNAL_RESET_DISABLE	BIT(2)
+#define LVDS_DIGITAL_INTERNAL_RESET_ENABLE	0
+/* LVDS Register Part: reg01 */
+#define LVDS_DIGITAL_INTERNAL_ENABLE_MASK	BIT(7)
+#define LVDS_DIGITAL_INTERNAL_ENABLE		BIT(7)
+#define LVDS_DIGITAL_INTERNAL_DISABLE		0
+/* LVDS Register Part: reg03 */
+#define MODE_ENABLE_MASK			GENMASK(2, 0)
+#define TTL_MODE_ENABLE				BIT(2)
+#define LVDS_MODE_ENABLE			BIT(1)
+#define MIPI_MODE_ENABLE			BIT(0)
+/* LVDS Register Part: reg0b */
+#define LVDS_LANE_EN_MASK			GENMASK(7, 3)
+#define LVDS_DATA_LANE0_EN			BIT(7)
+#define LVDS_DATA_LANE1_EN			BIT(6)
+#define LVDS_DATA_LANE2_EN			BIT(5)
+#define LVDS_DATA_LANE3_EN			BIT(4)
+#define LVDS_CLK_LANE_EN			BIT(3)
+#define LVDS_PLL_POWER_MASK			BIT(2)
+#define LVDS_PLL_POWER_OFF			BIT(2)
+#define LVDS_PLL_POWER_ON			0
+#define LVDS_BANDGAP_POWER_MASK			BIT(0)
+#define LVDS_BANDGAP_POWER_DOWN			BIT(0)
+#define LVDS_BANDGAP_POWER_ON			0
+
+#define DSI_PHY_RSTZ		0xa0
+#define PHY_ENABLECLK		BIT(2)
+#define DSI_PHY_STATUS		0xb0
+#define PHY_LOCK		BIT(0)
+
+enum phy_max_rate {
+	MAX_1GHZ,
+	MAX_2_5GHZ,
+};
+
+struct inno_video_phy_plat_data {
+	const struct inno_mipi_dphy_timing *inno_mipi_dphy_timing_table;
+	const unsigned int num_timings;
+	enum phy_max_rate max_rate;
+};
+
+struct inno_dsidphy {
+	struct device *dev;
+	struct clk *ref_clk;
+	struct clk *pclk_phy;
+	struct clk *pclk_host;
+	const struct inno_video_phy_plat_data *pdata;
+	void __iomem *phy_base;
+	void __iomem *host_base;
+	struct reset_control *rst;
+	enum phy_mode mode;
+	struct phy_configure_opts_mipi_dphy dphy_cfg;
+
+	struct clk *pll_clk;
+	struct {
+		struct clk_hw hw;
+		u8 prediv;
+		u16 fbdiv;
+		unsigned long rate;
+	} pll;
+};
+
+enum {
+	REGISTER_PART_ANALOG,
+	REGISTER_PART_DIGITAL,
+	REGISTER_PART_CLOCK_LANE,
+	REGISTER_PART_DATA0_LANE,
+	REGISTER_PART_DATA1_LANE,
+	REGISTER_PART_DATA2_LANE,
+	REGISTER_PART_DATA3_LANE,
+	REGISTER_PART_LVDS,
+};
+
+struct inno_mipi_dphy_timing {
+	unsigned long rate;
+	u8 lpx;
+	u8 hs_prepare;
+	u8 clk_lane_hs_zero;
+	u8 data_lane_hs_zero;
+	u8 hs_trail;
+};
+
+static const
+struct inno_mipi_dphy_timing inno_mipi_dphy_timing_table_max_1ghz[] = {
+	{ 110000000, 0x0, 0x20, 0x16, 0x02, 0x22},
+	{ 150000000, 0x0, 0x06, 0x16, 0x03, 0x45},
+	{ 200000000, 0x0, 0x18, 0x17, 0x04, 0x0b},
+	{ 250000000, 0x0, 0x05, 0x17, 0x05, 0x16},
+	{ 300000000, 0x0, 0x51, 0x18, 0x06, 0x2c},
+	{ 400000000, 0x0, 0x64, 0x19, 0x07, 0x33},
+	{ 500000000, 0x0, 0x20, 0x1b, 0x07, 0x4e},
+	{ 600000000, 0x0, 0x6a, 0x1d, 0x08, 0x3a},
+	{ 700000000, 0x0, 0x3e, 0x1e, 0x08, 0x6a},
+	{ 800000000, 0x0, 0x21, 0x1f, 0x09, 0x29},
+	{1000000000, 0x0, 0x09, 0x20, 0x09, 0x27},
+};
+
+static const
+struct inno_mipi_dphy_timing inno_mipi_dphy_timing_table_max_2_5ghz[] = {
+	{ 110000000, 0x02, 0x7f, 0x16, 0x02, 0x02},
+	{ 150000000, 0x02, 0x7f, 0x16, 0x03, 0x02},
+	{ 200000000, 0x02, 0x7f, 0x17, 0x04, 0x02},
+	{ 250000000, 0x02, 0x7f, 0x17, 0x05, 0x04},
+	{ 300000000, 0x02, 0x7f, 0x18, 0x06, 0x04},
+	{ 400000000, 0x03, 0x7e, 0x19, 0x07, 0x04},
+	{ 500000000, 0x03, 0x7c, 0x1b, 0x07, 0x08},
+	{ 600000000, 0x03, 0x70, 0x1d, 0x08, 0x10},
+	{ 700000000, 0x05, 0x40, 0x1e, 0x08, 0x30},
+	{ 800000000, 0x05, 0x02, 0x1f, 0x09, 0x30},
+	{1000000000, 0x05, 0x08, 0x20, 0x09, 0x30},
+	{1200000000, 0x06, 0x03, 0x32, 0x14, 0x0f},
+	{1400000000, 0x09, 0x03, 0x32, 0x14, 0x0f},
+	{1600000000, 0x0d, 0x42, 0x36, 0x0e, 0x0f},
+	{1800000000, 0x0e, 0x47, 0x7a, 0x0e, 0x0f},
+	{2000000000, 0x11, 0x64, 0x7a, 0x0e, 0x0b},
+	{2200000000, 0x13, 0x64, 0x7e, 0x15, 0x0b},
+	{2400000000, 0x13, 0x33, 0x7f, 0x15, 0x6a},
+	{2500000000, 0x15, 0x54, 0x7f, 0x15, 0x6a},
+};
+
+static void phy_update_bits(struct inno_dsidphy *inno,
+			    u8 first, u8 second, u8 mask, u8 val)
+{
+	u32 reg = PHY_REG(first, second) << 2;
+	unsigned int tmp, orig;
+
+	orig = readl(inno->phy_base + reg);
+	tmp = orig & ~mask;
+	tmp |= val & mask;
+	writel(tmp, inno->phy_base + reg);
+}
+
+static unsigned long inno_dsidphy_pll_calc_rate(struct inno_dsidphy *inno,
+						unsigned long rate)
+{
+	unsigned long prate = clk_get_rate(inno->ref_clk);
+	unsigned long best_freq = 0;
+	unsigned long fref, fout;
+	u8 min_prediv, max_prediv;
+	u8 _prediv, best_prediv = 1;
+	u16 _fbdiv, best_fbdiv = 1;
+	u32 min_delta = UINT_MAX;
+
+	/*
+	 * The PLL output frequency can be calculated using a simple formula:
+	 * PLL_Output_Frequency = (FREF / PREDIV * FBDIV) / 2
+	 * PLL_Output_Frequency: it is equal to DDR-Clock-Frequency * 2
+	 */
+	fref = prate / 2;
+	if (rate > 1000000000UL)
+		fout = 1000000000UL;
+	else
+		fout = rate;
+
+	/* 5Mhz < Fref / prediv < 40MHz */
+	min_prediv = DIV_ROUND_UP(fref, 40000000);
+	max_prediv = fref / 5000000;
+
+	for (_prediv = min_prediv; _prediv <= max_prediv; _prediv++) {
+		u64 tmp;
+		u32 delta;
+
+		tmp = (u64)fout * _prediv;
+		do_div(tmp, fref);
+		_fbdiv = tmp;
+
+		/*
+		 * The possible settings of feedback divider are
+		 * 12, 13, 14, 16, ~ 511
+		 */
+		if (_fbdiv == 15)
+			continue;
+
+		if (_fbdiv < 12 || _fbdiv > 511)
+			continue;
+
+		tmp = (u64)_fbdiv * fref;
+		do_div(tmp, _prediv);
+
+		delta = abs(fout - tmp);
+		if (!delta) {
+			best_prediv = _prediv;
+			best_fbdiv = _fbdiv;
+			best_freq = tmp;
+			break;
+		} else if (delta < min_delta) {
+			best_prediv = _prediv;
+			best_fbdiv = _fbdiv;
+			best_freq = tmp;
+			min_delta = delta;
+		}
+	}
+
+	if (best_freq) {
+		inno->pll.prediv = best_prediv;
+		inno->pll.fbdiv = best_fbdiv;
+		inno->pll.rate = best_freq;
+	}
+
+	return best_freq;
+}
+
+static void inno_dsidphy_mipi_mode_enable(struct inno_dsidphy *inno)
+{
+	struct phy_configure_opts_mipi_dphy *cfg = &inno->dphy_cfg;
+	const struct inno_mipi_dphy_timing *timings;
+	u32 t_txbyteclkhs, t_txclkesc;
+	u32 txbyteclkhs, txclkesc, esc_clk_div;
+	u32 hs_exit, clk_post, clk_pre, wakeup, lpx, ta_go, ta_sure, ta_wait;
+	u32 hs_prepare, hs_trail, hs_zero, clk_lane_hs_zero, data_lane_hs_zero;
+	unsigned int i;
+
+	timings = inno->pdata->inno_mipi_dphy_timing_table;
+
+	inno_dsidphy_pll_calc_rate(inno, cfg->hs_clk_rate);
+
+	/* Select MIPI mode */
+	phy_update_bits(inno, REGISTER_PART_LVDS, 0x03,
+			MODE_ENABLE_MASK, MIPI_MODE_ENABLE);
+	/* Configure PLL */
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x03,
+			REG_PREDIV_MASK, REG_PREDIV(inno->pll.prediv));
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x03,
+			REG_FBDIV_HI_MASK, REG_FBDIV_HI(inno->pll.fbdiv));
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x04,
+			REG_FBDIV_LO_MASK, REG_FBDIV_LO(inno->pll.fbdiv));
+	if (inno->pdata->max_rate == MAX_2_5GHZ) {
+		phy_update_bits(inno, REGISTER_PART_ANALOG, 0x08,
+				PLL_POST_DIV_ENABLE_MASK, PLL_POST_DIV_ENABLE);
+		phy_update_bits(inno, REGISTER_PART_ANALOG, 0x0b,
+				CLOCK_LANE_VOD_RANGE_SET_MASK,
+				CLOCK_LANE_VOD_RANGE_SET(VOD_MAX_RANGE));
+	}
+	/* Enable PLL and LDO */
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x01,
+			REG_LDOPD_MASK | REG_PLLPD_MASK,
+			REG_LDOPD_POWER_ON | REG_PLLPD_POWER_ON);
+	/* Reset analog */
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x01,
+			REG_SYNCRST_MASK, REG_SYNCRST_RESET);
+	udelay(1);
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x01,
+			REG_SYNCRST_MASK, REG_SYNCRST_NORMAL);
+	/* Reset digital */
+	phy_update_bits(inno, REGISTER_PART_DIGITAL, 0x00,
+			REG_DIG_RSTN_MASK, REG_DIG_RSTN_RESET);
+	udelay(1);
+	phy_update_bits(inno, REGISTER_PART_DIGITAL, 0x00,
+			REG_DIG_RSTN_MASK, REG_DIG_RSTN_NORMAL);
+
+	txbyteclkhs = inno->pll.rate / 8;
+	t_txbyteclkhs = div_u64(PSEC_PER_SEC, txbyteclkhs);
+
+	esc_clk_div = DIV_ROUND_UP(txbyteclkhs, 20000000);
+	txclkesc = txbyteclkhs / esc_clk_div;
+	t_txclkesc = div_u64(PSEC_PER_SEC, txclkesc);
+
+	/*
+	 * The value of counter for HS Ths-exit
+	 * Ths-exit = Tpin_txbyteclkhs * value
+	 */
+	hs_exit = DIV_ROUND_UP(cfg->hs_exit, t_txbyteclkhs);
+	/*
+	 * The value of counter for HS Tclk-post
+	 * Tclk-post = Tpin_txbyteclkhs * value
+	 */
+	clk_post = DIV_ROUND_UP(cfg->clk_post, t_txbyteclkhs);
+	/*
+	 * The value of counter for HS Tclk-pre
+	 * Tclk-pre = Tpin_txbyteclkhs * value
+	 */
+	clk_pre = DIV_ROUND_UP(cfg->clk_pre, BITS_PER_BYTE);
+
+	/*
+	 * The value of counter for HS Tta-go
+	 * Tta-go for turnaround
+	 * Tta-go = Ttxclkesc * value
+	 */
+	ta_go = DIV_ROUND_UP(cfg->ta_go, t_txclkesc);
+	/*
+	 * The value of counter for HS Tta-sure
+	 * Tta-sure for turnaround
+	 * Tta-sure = Ttxclkesc * value
+	 */
+	ta_sure = DIV_ROUND_UP(cfg->ta_sure, t_txclkesc);
+	/*
+	 * The value of counter for HS Tta-wait
+	 * Tta-wait for turnaround
+	 * Tta-wait = Ttxclkesc * value
+	 */
+	ta_wait = DIV_ROUND_UP(cfg->ta_get, t_txclkesc);
+
+	for (i = 0; i < inno->pdata->num_timings; i++)
+		if (inno->pll.rate <= timings[i].rate)
+			break;
+
+	if (i == inno->pdata->num_timings)
+		--i;
+
+	/*
+	 * The value of counter for HS Tlpx Time
+	 * Tlpx = Tpin_txbyteclkhs * (2 + value)
+	 */
+	if (inno->pdata->max_rate == MAX_1GHZ) {
+		lpx = DIV_ROUND_UP(cfg->lpx, t_txbyteclkhs);
+		if (lpx >= 2)
+			lpx -= 2;
+	} else
+		lpx = timings[i].lpx;
+
+	hs_prepare = timings[i].hs_prepare;
+	hs_trail = timings[i].hs_trail;
+	clk_lane_hs_zero = timings[i].clk_lane_hs_zero;
+	data_lane_hs_zero = timings[i].data_lane_hs_zero;
+	wakeup = 0x3ff;
+
+	for (i = REGISTER_PART_CLOCK_LANE; i <= REGISTER_PART_DATA3_LANE; i++) {
+		if (i == REGISTER_PART_CLOCK_LANE)
+			hs_zero = clk_lane_hs_zero;
+		else
+			hs_zero = data_lane_hs_zero;
+
+		phy_update_bits(inno, i, 0x05, T_LPX_CNT_MASK,
+				T_LPX_CNT(lpx));
+		phy_update_bits(inno, i, 0x06, T_HS_PREPARE_CNT_MASK,
+				T_HS_PREPARE_CNT(hs_prepare));
+		if (inno->pdata->max_rate == MAX_2_5GHZ)
+			phy_update_bits(inno, i, 0x06, T_HS_ZERO_CNT_HI_MASK,
+					T_HS_ZERO_CNT_HI(hs_zero >> 6));
+		phy_update_bits(inno, i, 0x07, T_HS_ZERO_CNT_LO_MASK,
+				T_HS_ZERO_CNT_LO(hs_zero));
+		phy_update_bits(inno, i, 0x08, T_HS_TRAIL_CNT_MASK,
+				T_HS_TRAIL_CNT(hs_trail));
+		if (inno->pdata->max_rate == MAX_2_5GHZ)
+			phy_update_bits(inno, i, 0x11, T_HS_EXIT_CNT_HI_MASK,
+					T_HS_EXIT_CNT_HI(hs_exit >> 5));
+		phy_update_bits(inno, i, 0x09, T_HS_EXIT_CNT_LO_MASK,
+				T_HS_EXIT_CNT_LO(hs_exit));
+		if (inno->pdata->max_rate == MAX_2_5GHZ)
+			phy_update_bits(inno, i, 0x10, T_CLK_POST_CNT_HI_MASK,
+					T_CLK_POST_CNT_HI(clk_post >> 4));
+		phy_update_bits(inno, i, 0x0a, T_CLK_POST_CNT_LO_MASK,
+				T_CLK_POST_CNT_LO(clk_post));
+		phy_update_bits(inno, i, 0x0e, T_CLK_PRE_CNT_MASK,
+				T_CLK_PRE_CNT(clk_pre));
+		phy_update_bits(inno, i, 0x0c, T_WAKEUP_CNT_HI_MASK,
+				T_WAKEUP_CNT_HI(wakeup >> 8));
+		phy_update_bits(inno, i, 0x0d, T_WAKEUP_CNT_LO_MASK,
+				T_WAKEUP_CNT_LO(wakeup));
+		phy_update_bits(inno, i, 0x10, T_TA_GO_CNT_MASK,
+				T_TA_GO_CNT(ta_go));
+		phy_update_bits(inno, i, 0x11, T_TA_SURE_CNT_MASK,
+				T_TA_SURE_CNT(ta_sure));
+		phy_update_bits(inno, i, 0x12, T_TA_WAIT_CNT_MASK,
+				T_TA_WAIT_CNT(ta_wait));
+	}
+
+	/* Enable all lanes on analog part */
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
+			LANE_EN_MASK, LANE_EN_CK | LANE_EN_3 | LANE_EN_2 |
+			LANE_EN_1 | LANE_EN_0);
+}
+
+static void inno_dsidphy_lvds_mode_enable(struct inno_dsidphy *inno)
+{
+	u8 prediv = 2;
+	u16 fbdiv = 28;
+
+	/* Sample clock reverse direction */
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x08,
+			SAMPLE_CLOCK_DIRECTION_MASK | LOWFRE_EN_MASK,
+			SAMPLE_CLOCK_DIRECTION_REVERSE |
+			PLL_OUTPUT_FREQUENCY_DIV_BY_1);
+
+	/* Select LVDS mode */
+	phy_update_bits(inno, REGISTER_PART_LVDS, 0x03,
+			MODE_ENABLE_MASK, LVDS_MODE_ENABLE);
+	/* Configure PLL */
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x03,
+			REG_PREDIV_MASK, REG_PREDIV(prediv));
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x03,
+			REG_FBDIV_HI_MASK, REG_FBDIV_HI(fbdiv));
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x04,
+			REG_FBDIV_LO_MASK, REG_FBDIV_LO(fbdiv));
+	phy_update_bits(inno, REGISTER_PART_LVDS, 0x08, 0xff, 0xfc);
+	/* Enable PLL and Bandgap */
+	phy_update_bits(inno, REGISTER_PART_LVDS, 0x0b,
+			LVDS_PLL_POWER_MASK | LVDS_BANDGAP_POWER_MASK,
+			LVDS_PLL_POWER_ON | LVDS_BANDGAP_POWER_ON);
+
+	mdelay(20);
+
+	/* Select PLL mode */
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x1e,
+			PLL_MODE_SEL_MASK, PLL_MODE_SEL_LVDS_MODE);
+
+	/* Reset LVDS digital logic */
+	phy_update_bits(inno, REGISTER_PART_LVDS, 0x00,
+			LVDS_DIGITAL_INTERNAL_RESET_MASK,
+			LVDS_DIGITAL_INTERNAL_RESET_ENABLE);
+	udelay(1);
+	phy_update_bits(inno, REGISTER_PART_LVDS, 0x00,
+			LVDS_DIGITAL_INTERNAL_RESET_MASK,
+			LVDS_DIGITAL_INTERNAL_RESET_DISABLE);
+	/* Enable LVDS digital logic */
+	phy_update_bits(inno, REGISTER_PART_LVDS, 0x01,
+			LVDS_DIGITAL_INTERNAL_ENABLE_MASK,
+			LVDS_DIGITAL_INTERNAL_ENABLE);
+	/* Enable LVDS analog driver */
+	phy_update_bits(inno, REGISTER_PART_LVDS, 0x0b,
+			LVDS_LANE_EN_MASK, LVDS_CLK_LANE_EN |
+			LVDS_DATA_LANE0_EN | LVDS_DATA_LANE1_EN |
+			LVDS_DATA_LANE2_EN | LVDS_DATA_LANE3_EN);
+}
+
+static int inno_dsidphy_power_on(struct phy *phy)
+{
+	struct inno_dsidphy *inno = phy_get_drvdata(phy);
+
+	clk_prepare_enable(inno->pclk_phy);
+	clk_prepare_enable(inno->ref_clk);
+
+	/* Bandgap power on */
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
+			BANDGAP_POWER_MASK, BANDGAP_POWER_ON);
+	/* Enable power work */
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
+			POWER_WORK_MASK, POWER_WORK_ENABLE);
+
+	switch (inno->mode) {
+	case PHY_MODE_MIPI_DPHY:
+		inno_dsidphy_mipi_mode_enable(inno);
+		break;
+	case PHY_MODE_LVDS:
+		inno_dsidphy_lvds_mode_enable(inno);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int inno_dsidphy_power_off(struct phy *phy)
+{
+	struct inno_dsidphy *inno = phy_get_drvdata(phy);
+
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00, LANE_EN_MASK, 0);
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x01,
+			REG_LDOPD_MASK | REG_PLLPD_MASK,
+			REG_LDOPD_POWER_DOWN | REG_PLLPD_POWER_DOWN);
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
+			POWER_WORK_MASK, POWER_WORK_DISABLE);
+	phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
+			BANDGAP_POWER_MASK, BANDGAP_POWER_DOWN);
+
+	phy_update_bits(inno, REGISTER_PART_LVDS, 0x0b, LVDS_LANE_EN_MASK, 0);
+	phy_update_bits(inno, REGISTER_PART_LVDS, 0x01,
+			LVDS_DIGITAL_INTERNAL_ENABLE_MASK,
+			LVDS_DIGITAL_INTERNAL_DISABLE);
+	phy_update_bits(inno, REGISTER_PART_LVDS, 0x0b,
+			LVDS_PLL_POWER_MASK | LVDS_BANDGAP_POWER_MASK,
+			LVDS_PLL_POWER_OFF | LVDS_BANDGAP_POWER_DOWN);
+
+	clk_disable_unprepare(inno->ref_clk);
+	clk_disable_unprepare(inno->pclk_phy);
+
+	return 0;
+}
+
+static int inno_dsidphy_set_mode(struct phy *phy, enum phy_mode mode,
+				   int submode)
+{
+	struct inno_dsidphy *inno = phy_get_drvdata(phy);
+
+	switch (mode) {
+	case PHY_MODE_MIPI_DPHY:
+	case PHY_MODE_LVDS:
+		inno->mode = mode;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int inno_dsidphy_configure(struct phy *phy,
+				  union phy_configure_opts *opts)
+{
+	struct inno_dsidphy *inno = phy_get_drvdata(phy);
+	int ret;
+
+	if (inno->mode != PHY_MODE_MIPI_DPHY)
+		return -EINVAL;
+
+	ret = phy_mipi_dphy_config_validate(&opts->mipi_dphy);
+	if (ret)
+		return ret;
+
+	memcpy(&inno->dphy_cfg, &opts->mipi_dphy, sizeof(inno->dphy_cfg));
+
+	return 0;
+}
+
+static const struct phy_ops inno_dsidphy_ops = {
+	.configure = inno_dsidphy_configure,
+	.set_mode = inno_dsidphy_set_mode,
+	.power_on = inno_dsidphy_power_on,
+	.power_off = inno_dsidphy_power_off,
+};
+
+static const struct inno_video_phy_plat_data max_1ghz_video_phy_plat_data = {
+	.inno_mipi_dphy_timing_table = inno_mipi_dphy_timing_table_max_1ghz,
+	.num_timings = ARRAY_SIZE(inno_mipi_dphy_timing_table_max_1ghz),
+	.max_rate = MAX_1GHZ,
+};
+
+static const struct inno_video_phy_plat_data max_2_5ghz_video_phy_plat_data = {
+	.inno_mipi_dphy_timing_table = inno_mipi_dphy_timing_table_max_2_5ghz,
+	.num_timings = ARRAY_SIZE(inno_mipi_dphy_timing_table_max_2_5ghz),
+	.max_rate = MAX_2_5GHZ,
+};
+
+static int inno_dsidphy_probe(struct device *dev)
+{
+	struct inno_dsidphy *inno;
+	struct phy_provider *phy_provider;
+	struct phy *phy;
+
+	inno = devm_kzalloc(dev, sizeof(*inno), GFP_KERNEL);
+	if (!inno)
+		return -ENOMEM;
+
+	inno->dev = dev;
+	inno->pdata = device_get_match_data(inno->dev);
+	dev_set_drvdata(dev, inno);
+
+	inno->phy_base = dev_platform_ioremap_resource(dev, 0);
+	if (IS_ERR(inno->phy_base))
+		return PTR_ERR(inno->phy_base);
+
+	inno->ref_clk = clk_get(dev, "ref");
+	if (IS_ERR(inno->ref_clk))
+		return dev_errp_probe(dev, inno->ref_clk,
+				      "failed to get ref clock\n");
+
+	inno->pclk_phy = clk_get(dev, "pclk");
+	if (IS_ERR(inno->pclk_phy))
+		return dev_errp_probe(dev, inno->pclk_phy,
+				      "failed to get phy pclk\n");
+
+	inno->rst = reset_control_get(dev, "apb");
+	if (IS_ERR(inno->rst))
+		return dev_errp_probe(dev, inno->rst,
+				      "failed to get system reset control\n");
+
+	phy = phy_create(dev, NULL, &inno_dsidphy_ops);
+	if (IS_ERR(phy))
+		return dev_errp_probe(dev, phy, "failed to create phy\n");
+
+	phy_set_drvdata(phy, inno);
+
+	phy_provider = of_phy_provider_register(dev, of_phy_simple_xlate);
+	if (IS_ERR(phy_provider))
+		return dev_errp_probe(dev, phy_provider,
+				      "failed to register phy provider\n");
+
+	return 0;
+}
+
+static const struct of_device_id inno_dsidphy_of_match[] = {
+	{
+		.compatible = "rockchip,px30-dsi-dphy",
+		.data = &max_1ghz_video_phy_plat_data,
+	}, {
+		.compatible = "rockchip,rk3128-dsi-dphy",
+		.data = &max_1ghz_video_phy_plat_data,
+	}, {
+		.compatible = "rockchip,rk3368-dsi-dphy",
+		.data = &max_1ghz_video_phy_plat_data,
+	}, {
+		.compatible = "rockchip,rk3568-dsi-dphy",
+		.data = &max_2_5ghz_video_phy_plat_data,
+	}, {
+		.compatible = "rockchip,rv1126-dsi-dphy",
+		.data = &max_2_5ghz_video_phy_plat_data,
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(of, inno_dsidphy_of_match);
+
+static struct driver inno_dsidphy_driver = {
+	.name = "inno-dsidphy",
+	.of_match_table	= of_match_ptr(inno_dsidphy_of_match),
+	.probe = inno_dsidphy_probe,
+};
+device_platform_driver(inno_dsidphy_driver);
+
+MODULE_AUTHOR("Wyon Bi <bivvy.bi@rock-chips.com>");
+MODULE_DESCRIPTION("Innosilicon MIPI/LVDS/TTL Video Combo PHY driver");
+MODULE_LICENSE("GPL v2");
-- 
2.47.3