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[76.183.134.35]) by smtp.gmail.com with ESMTPSA id n28-20020a0568080a1c00b003436fa2c23bsm282879oij.7.2022.08.12.07.32.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Aug 2022 07:32:55 -0700 (PDT) From: Chris Morgan To: linux-rockchip@lists.infradead.org Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, vkoul@kernel.org, kishon@ti.com, krzysztof.kozlowski+dt@linaro.org, robh+dt@kernel.org, daniel@ffwll.ch, airlied@linux.ie, heiko@sntech.de, hjc@rock-chips.com, Chris Morgan Subject: [RFC 4/4] phy/rockchip: inno-dsidphy: Add support for rk3568 Date: Fri, 12 Aug 2022 09:32:47 -0500 Message-Id: <20220812143247.25825-5-macroalpha82@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220812143247.25825-1-macroalpha82@gmail.com> References: <20220812143247.25825-1-macroalpha82@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Chris Morgan Add support for the Rockchip RK3568 DSI-DPHY. Registers were taken from the BSP kernel driver and wherever possible cross referenced with the TRM. Signed-off-by: Chris Morgan --- .../phy/rockchip/phy-rockchip-inno-dsidphy.c | 204 ++++++++++++++---- 1 file changed, 158 insertions(+), 46 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-inno-dsidphy.c b/drivers/phy/rockchip/phy-rockchip-inno-dsidphy.c index 630e01b5c19b..2c5847faff63 100644 --- a/drivers/phy/rockchip/phy-rockchip-inno-dsidphy.c +++ b/drivers/phy/rockchip/phy-rockchip-inno-dsidphy.c @@ -84,9 +84,25 @@ #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) @@ -102,20 +118,22 @@ #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_MASK GENMASK(5, 0) -#define T_HS_ZERO_CNT(x) UPDATE(x, 5, 0) +#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_MASK GENMASK(4, 0) -#define T_HS_EXIT_CNT(x) UPDATE(x, 4, 0) +#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_MASK GENMASK(3, 0) -#define T_CLK_POST_CNT(x) UPDATE(x, 3, 0) +#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) @@ -129,9 +147,13 @@ #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 */ @@ -169,11 +191,23 @@ #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; @@ -200,6 +234,53 @@ enum { 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 inline struct inno_dsidphy *hw_to_inno(struct clk_hw *hw) { return container_of(hw, struct inno_dsidphy, pll.hw); @@ -290,31 +371,15 @@ static unsigned long inno_dsidphy_pll_calc_rate(struct inno_dsidphy *inno, static void inno_dsidphy_mipi_mode_enable(struct inno_dsidphy *inno) { struct phy_configure_opts_mipi_dphy *cfg = &inno->dphy_cfg; - const struct { - unsigned long rate; - u8 hs_prepare; - u8 clk_lane_hs_zero; - u8 data_lane_hs_zero; - u8 hs_trail; - } timings[] = { - { 110000000, 0x20, 0x16, 0x02, 0x22}, - { 150000000, 0x06, 0x16, 0x03, 0x45}, - { 200000000, 0x18, 0x17, 0x04, 0x0b}, - { 250000000, 0x05, 0x17, 0x05, 0x16}, - { 300000000, 0x51, 0x18, 0x06, 0x2c}, - { 400000000, 0x64, 0x19, 0x07, 0x33}, - { 500000000, 0x20, 0x1b, 0x07, 0x4e}, - { 600000000, 0x6a, 0x1d, 0x08, 0x3a}, - { 700000000, 0x3e, 0x1e, 0x08, 0x6a}, - { 800000000, 0x21, 0x1f, 0x09, 0x29}, - {1000000000, 0x09, 0x20, 0x09, 0x27}, - }; + 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 */ @@ -327,6 +392,13 @@ static void inno_dsidphy_mipi_mode_enable(struct inno_dsidphy *inno) 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, @@ -367,14 +439,6 @@ static void inno_dsidphy_mipi_mode_enable(struct inno_dsidphy *inno) */ clk_pre = DIV_ROUND_UP(cfg->clk_pre, BITS_PER_BYTE); - /* - * The value of counter for HS Tlpx Time - * Tlpx = Tpin_txbyteclkhs * (2 + value) - */ - lpx = DIV_ROUND_UP(cfg->lpx, t_txbyteclkhs); - if (lpx >= 2) - lpx -= 2; - /* * The value of counter for HS Tta-go * Tta-go for turnaround @@ -394,13 +458,24 @@ static void inno_dsidphy_mipi_mode_enable(struct inno_dsidphy *inno) */ ta_wait = DIV_ROUND_UP(cfg->ta_get, t_txclkesc); - for (i = 0; i < ARRAY_SIZE(timings); i++) + for (i = 0; i < inno->pdata->num_timings; i++) if (inno->pll.rate <= timings[i].rate) break; - if (i == ARRAY_SIZE(timings)) + 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; @@ -417,14 +492,23 @@ static void inno_dsidphy_mipi_mode_enable(struct inno_dsidphy *inno) T_LPX_CNT(lpx)); phy_update_bits(inno, i, 0x06, T_HS_PREPARE_CNT_MASK, T_HS_PREPARE_CNT(hs_prepare)); - phy_update_bits(inno, i, 0x07, T_HS_ZERO_CNT_MASK, - T_HS_ZERO_CNT(hs_zero)); + 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)); - phy_update_bits(inno, i, 0x09, T_HS_EXIT_CNT_MASK, - T_HS_EXIT_CNT(hs_exit)); - phy_update_bits(inno, i, 0x0a, T_CLK_POST_CNT_MASK, - T_CLK_POST_CNT(clk_post)); + 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, @@ -452,8 +536,9 @@ static void inno_dsidphy_lvds_mode_enable(struct inno_dsidphy *inno) /* Sample clock reverse direction */ phy_update_bits(inno, REGISTER_PART_ANALOG, 0x08, - SAMPLE_CLOCK_DIRECTION_MASK, - SAMPLE_CLOCK_DIRECTION_REVERSE); + 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, @@ -473,6 +558,10 @@ static void inno_dsidphy_lvds_mode_enable(struct inno_dsidphy *inno) msleep(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, @@ -592,6 +681,18 @@ static const struct phy_ops inno_dsidphy_ops = { .owner = THIS_MODULE, }; +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 platform_device *pdev) { struct device *dev = &pdev->dev; @@ -605,6 +706,7 @@ static int inno_dsidphy_probe(struct platform_device *pdev) return -ENOMEM; inno->dev = dev; + inno->pdata = of_device_get_match_data(inno->dev); platform_set_drvdata(pdev, inno); inno->phy_base = devm_platform_ioremap_resource(pdev, 0); @@ -663,9 +765,19 @@ static int inno_dsidphy_remove(struct platform_device *pdev) } static const struct of_device_id inno_dsidphy_of_match[] = { - { .compatible = "rockchip,px30-dsi-dphy", }, - { .compatible = "rockchip,rk3128-dsi-dphy", }, - { .compatible = "rockchip,rk3368-dsi-dphy", }, + { + .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, + }, {} }; MODULE_DEVICE_TABLE(of, inno_dsidphy_of_match);