[PATCH v3 4/8] drm/msm/dsi: add support for DSI-PHY on SM8350 and SM8450
Konrad Dybcio
konrad.dybcio at somainline.org
Fri Nov 4 13:54:10 UTC 2022
On 04/11/2022 14:03, Dmitry Baryshkov wrote:
> SM8350 and SM8450 use 5nm DSI PHYs, which share register definitions
> with 7nm DSI PHYs. Rather than duplicating the driver, handle 5nm
> variants inside the common 5+7nm driver.
>
> Co-developed-by: Robert Foss <robert.foss at linaro.org>
> Tested-by: Vinod Koul <vkoul at kernel.org>
> Reviewed-by: Vinod Koul <vkoul at kernel.org>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
> ---
> drivers/gpu/drm/msm/Kconfig | 6 +-
> drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 4 +
> drivers/gpu/drm/msm/dsi/phy/dsi_phy.h | 2 +
> drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 128 ++++++++++++++++++++--
> 4 files changed, 127 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
> index 3c9dfdb0b328..e7b100d97f88 100644
> --- a/drivers/gpu/drm/msm/Kconfig
> +++ b/drivers/gpu/drm/msm/Kconfig
> @@ -140,12 +140,12 @@ config DRM_MSM_DSI_10NM_PHY
> Choose this option if DSI PHY on SDM845 is used on the platform.
>
> config DRM_MSM_DSI_7NM_PHY
> - bool "Enable DSI 7nm PHY driver in MSM DRM"
> + bool "Enable DSI 7nm/5nm PHY driver in MSM DRM"
> depends on DRM_MSM_DSI
> default y
> help
> - Choose this option if DSI PHY on SM8150/SM8250/SC7280 is used on
> - the platform.
> + Choose this option if DSI PHY on SM8150/SM8250/SM8350/SM8450/SC7280
> + is used on the platform.
>
> config DRM_MSM_HDMI
> bool "Enable HDMI support in MSM DRM driver"
> diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
> index ee6051367679..0c956fdab23e 100644
> --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
> +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
> @@ -569,6 +569,10 @@ static const struct of_device_id dsi_phy_dt_match[] = {
> .data = &dsi_phy_7nm_8150_cfgs },
> { .compatible = "qcom,sc7280-dsi-phy-7nm",
> .data = &dsi_phy_7nm_7280_cfgs },
> + { .compatible = "qcom,dsi-phy-5nm-8350",
> + .data = &dsi_phy_5nm_8350_cfgs },
> + { .compatible = "qcom,dsi-phy-5nm-8450",
> + .data = &dsi_phy_5nm_8450_cfgs },
> #endif
> {}
> };
> diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
> index 1096afedd616..f7a907ed2b4b 100644
> --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
> +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
> @@ -57,6 +57,8 @@ extern const struct msm_dsi_phy_cfg dsi_phy_10nm_8998_cfgs;
> extern const struct msm_dsi_phy_cfg dsi_phy_7nm_cfgs;
> extern const struct msm_dsi_phy_cfg dsi_phy_7nm_8150_cfgs;
> extern const struct msm_dsi_phy_cfg dsi_phy_7nm_7280_cfgs;
> +extern const struct msm_dsi_phy_cfg dsi_phy_5nm_8350_cfgs;
> +extern const struct msm_dsi_phy_cfg dsi_phy_5nm_8450_cfgs;
>
> struct msm_dsi_dphy_timing {
> u32 clk_zero;
> diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
> index 9e7fa7d88ead..00d92fe97bc3 100644
> --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
> +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
> @@ -39,8 +39,14 @@
> #define VCO_REF_CLK_RATE 19200000
> #define FRAC_BITS 18
>
> +/* Hardware is pre V4.1 */
> +#define DSI_PHY_7NM_QUIRK_PRE_V4_1 BIT(0)
> /* Hardware is V4.1 */
> -#define DSI_PHY_7NM_QUIRK_V4_1 BIT(0)
> +#define DSI_PHY_7NM_QUIRK_V4_1 BIT(1)
> +/* Hardware is V4.2 */
> +#define DSI_PHY_7NM_QUIRK_V4_2 BIT(2)
> +/* Hardware is V4.3 */
> +#define DSI_PHY_7NM_QUIRK_V4_3 BIT(3)
Quirk is quite an unfortunate name considering what we use it for.. but I
suppose it can stay, as otherwise even more renaming would have to be done.
>
> struct dsi_pll_config {
> bool enable_ssc;
> @@ -116,7 +122,7 @@ static void dsi_pll_calc_dec_frac(struct dsi_pll_7nm *pll, struct dsi_pll_config
> dec_multiple = div_u64(pll_freq * multiplier, divider);
> dec = div_u64_rem(dec_multiple, multiplier, &frac);
>
> - if (!(pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_1))
> + if (pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_PRE_V4_1)
> config->pll_clock_inverters = 0x28;
> else if (pll_freq <= 1000000000ULL)
> config->pll_clock_inverters = 0xa0;
> @@ -197,16 +203,25 @@ static void dsi_pll_config_hzindep_reg(struct dsi_pll_7nm *pll)
> void __iomem *base = pll->phy->pll_base;
> u8 analog_controls_five_1 = 0x01, vco_config_1 = 0x00;
>
> - if (pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_1) {
> + if (!(pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_PRE_V4_1))
> if (pll->vco_current_rate >= 3100000000ULL)
> analog_controls_five_1 = 0x03;
>
> + if (pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_1) {
> if (pll->vco_current_rate < 1520000000ULL)
> vco_config_1 = 0x08;
> else if (pll->vco_current_rate < 2990000000ULL)
> vco_config_1 = 0x01;
> }
>
> + if ((pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_2) ||
> + (pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_3)) {
> + if (pll->vco_current_rate < 1520000000ULL)
> + vco_config_1 = 0x08;
> + else if (pll->vco_current_rate >= 2990000000ULL)
> + vco_config_1 = 0x01;
> + }
> +
> dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_ANALOG_CONTROLS_FIVE_1,
> analog_controls_five_1);
> dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_VCO_CONFIG_1, vco_config_1);
> @@ -231,9 +246,9 @@ static void dsi_pll_config_hzindep_reg(struct dsi_pll_7nm *pll)
> dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_PFILT, 0x2f);
> dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_IFILT, 0x2a);
> dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_IFILT,
> - pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_1 ? 0x3f : 0x22);
> + !(pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_PRE_V4_1) ? 0x3f : 0x22);
>
> - if (pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_1) {
> + if (!(pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_PRE_V4_1)) {
> dsi_phy_write(base + REG_DSI_7nm_PHY_PLL_PERF_OPTIMIZE, 0x22);
> if (pll->slave)
> dsi_phy_write(pll->slave->phy->pll_base + REG_DSI_7nm_PHY_PLL_PERF_OPTIMIZE, 0x22);
> @@ -788,7 +803,7 @@ static void dsi_phy_hw_v4_0_lane_settings(struct msm_dsi_phy *phy)
> const u8 *tx_dctrl = tx_dctrl_0;
> void __iomem *lane_base = phy->lane_base;
>
> - if (phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_1)
> + if (!(phy->cfg->quirks & DSI_PHY_7NM_QUIRK_PRE_V4_1))
> tx_dctrl = tx_dctrl_1;
>
> /* Strength ctrl settings */
> @@ -844,6 +859,12 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy,
> if (dsi_phy_hw_v4_0_is_pll_on(phy))
> pr_warn("PLL turned on before configuring PHY\n");
>
> + /* Request for REFGEN READY */
> + if (phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_3) {
> + dsi_phy_write(phy->base + REG_DSI_7nm_PHY_CMN_GLBL_DIGTOP_SPARE10, 0x1);
> + udelay(500);
> + }
> +
> /* wait for REFGEN READY */
> ret = readl_poll_timeout_atomic(base + REG_DSI_7nm_PHY_CMN_PHY_STATUS,
> status, (status & BIT(0)),
> @@ -858,23 +879,53 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy,
> /* Alter PHY configurations if data rate less than 1.5GHZ*/
> less_than_1500_mhz = (clk_req->bitclk_rate <= 1500000000);
>
> - if (phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_1) {
> - vreg_ctrl_0 = less_than_1500_mhz ? 0x53 : 0x52;
> + if (phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_3) {
> + if (phy->cphy_mode) {
> + vreg_ctrl_0 = 0x51;
> + glbl_rescode_top_ctrl = less_than_1500_mhz ? 0x3d : 0x01;
> + glbl_rescode_bot_ctrl = less_than_1500_mhz ? 0x38 : 0x3b;
> + glbl_str_swi_cal_sel_ctrl = 0x00;
> + glbl_hstx_str_ctrl_0 = 0x00;
> + } else {
> + vreg_ctrl_0 = less_than_1500_mhz ? 0x53 : 0x52;
> + glbl_rescode_top_ctrl = less_than_1500_mhz ? 0x3d : 0x01;
msm-5.10 has it as 0x3d : 0x00 for both v4.2 and v4.3 in DPHY mode
> + glbl_rescode_bot_ctrl = less_than_1500_mhz ? 0x38 : 0x39;
> + glbl_str_swi_cal_sel_ctrl = 0x00;
> + glbl_hstx_str_ctrl_0 = 0x88;
> + }
> + } else if (phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_2) {
> + if (phy->cphy_mode) {
> + vreg_ctrl_0 = 0x51;
> + glbl_rescode_top_ctrl = less_than_1500_mhz ? 0x3d : 0x01;
> + glbl_rescode_bot_ctrl = less_than_1500_mhz ? 0x38 : 0x3b;
> + glbl_str_swi_cal_sel_ctrl = 0x00;
> + glbl_hstx_str_ctrl_0 = 0x00;
> + } else {
> + vreg_ctrl_0 = less_than_1500_mhz ? 0x53 : 0x52;
> + glbl_rescode_top_ctrl = less_than_1500_mhz ? 0x3c : 0x00;
> + glbl_rescode_bot_ctrl = less_than_1500_mhz ? 0x38 : 0x39;
> + glbl_str_swi_cal_sel_ctrl = 0x00;
> + glbl_hstx_str_ctrl_0 = 0x88;
> + }
> + } else if (phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_1) {
> if (phy->cphy_mode) {
> + vreg_ctrl_0 = 0x51;
> glbl_rescode_top_ctrl = 0x00;
> glbl_rescode_bot_ctrl = 0x3c;
> } else {
> + vreg_ctrl_0 = less_than_1500_mhz ? 0x53 : 0x52;
> glbl_rescode_top_ctrl = less_than_1500_mhz ? 0x3d : 0x00;
> glbl_rescode_bot_ctrl = less_than_1500_mhz ? 0x39 : 0x3c;
> }
> glbl_str_swi_cal_sel_ctrl = 0x00;
> glbl_hstx_str_ctrl_0 = 0x88;
> } else {
> - vreg_ctrl_0 = less_than_1500_mhz ? 0x5B : 0x59;
> if (phy->cphy_mode) {
> + vreg_ctrl_0 = 0x51;
> glbl_str_swi_cal_sel_ctrl = 0x03;
> glbl_hstx_str_ctrl_0 = 0x66;
> } else {
> + vreg_ctrl_0 = less_than_1500_mhz ? 0x5B : 0x59;
> glbl_str_swi_cal_sel_ctrl = less_than_1500_mhz ? 0x03 : 0x00;
> glbl_hstx_str_ctrl_0 = less_than_1500_mhz ? 0x66 : 0x88;
> }
> @@ -883,7 +934,6 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy,
> }
>
> if (phy->cphy_mode) {
> - vreg_ctrl_0 = 0x51;
> vreg_ctrl_1 = 0x55;
> glbl_pemph_ctrl_0 = 0x11;
> lane_ctrl0 = 0x17;
> @@ -1017,6 +1067,13 @@ static void dsi_7nm_phy_disable(struct msm_dsi_phy *phy)
> pr_warn("Turning OFF PHY while PLL is on\n");
>
> dsi_phy_hw_v4_0_config_lpcdrx(phy, false);
> +
> + /* Turn off REFGEN Vote */
> + dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_DIGTOP_SPARE10, 0x0);
> + wmb();
> + /* Delay to ensure HW removes vote before PHY shut down */
> + udelay(2);
Either thunderbird is acting up (again) or the code after the first
comment is
indented with spaces instead of tabs.
Other than that,
Reviewed-by: Konrad Dybcio <konrad.dybcio at somainline.org>
Konrad
> +
> data = dsi_phy_read(base + REG_DSI_7nm_PHY_CMN_CTRL_0);
>
> /* disable all lanes */
> @@ -1040,6 +1097,10 @@ static const struct regulator_bulk_data dsi_phy_7nm_37750uA_regulators[] = {
> { .supply = "vdds", .init_load_uA = 37550 },
> };
>
> +static const struct regulator_bulk_data dsi_phy_7nm_97800uA_regulators[] = {
> + { .supply = "vdds", .init_load_uA = 97800},
> +};
> +
> const struct msm_dsi_phy_cfg dsi_phy_7nm_cfgs = {
> .has_phy_lane = true,
> .regulator_data = dsi_phy_7nm_36mA_regulators,
> @@ -1079,6 +1140,7 @@ const struct msm_dsi_phy_cfg dsi_phy_7nm_8150_cfgs = {
> .max_pll_rate = 3500000000UL,
> .io_start = { 0xae94400, 0xae96400 },
> .num_dsi_phy = 2,
> + .quirks = DSI_PHY_7NM_QUIRK_PRE_V4_1,
> };
>
> const struct msm_dsi_phy_cfg dsi_phy_7nm_7280_cfgs = {
> @@ -1102,3 +1164,49 @@ const struct msm_dsi_phy_cfg dsi_phy_7nm_7280_cfgs = {
> .num_dsi_phy = 1,
> .quirks = DSI_PHY_7NM_QUIRK_V4_1,
> };
> +
> +const struct msm_dsi_phy_cfg dsi_phy_5nm_8350_cfgs = {
> + .has_phy_lane = true,
> + .regulator_data = dsi_phy_7nm_37750uA_regulators,
> + .num_regulators = ARRAY_SIZE(dsi_phy_7nm_37750uA_regulators),
> + .ops = {
> + .enable = dsi_7nm_phy_enable,
> + .disable = dsi_7nm_phy_disable,
> + .pll_init = dsi_pll_7nm_init,
> + .save_pll_state = dsi_7nm_pll_save_state,
> + .restore_pll_state = dsi_7nm_pll_restore_state,
> + .set_continuous_clock = dsi_7nm_set_continuous_clock,
> + },
> + .min_pll_rate = 600000000UL,
> +#ifdef CONFIG_64BIT
> + .max_pll_rate = 5000000000UL,
> +#else
> + .max_pll_rate = ULONG_MAX,
> +#endif
> + .io_start = { 0xae94400, 0xae96400 },
> + .num_dsi_phy = 2,
> + .quirks = DSI_PHY_7NM_QUIRK_V4_2,
> +};
> +
> +const struct msm_dsi_phy_cfg dsi_phy_5nm_8450_cfgs = {
> + .has_phy_lane = true,
> + .regulator_data = dsi_phy_7nm_97800uA_regulators,
> + .num_regulators = ARRAY_SIZE(dsi_phy_7nm_97800uA_regulators),
> + .ops = {
> + .enable = dsi_7nm_phy_enable,
> + .disable = dsi_7nm_phy_disable,
> + .pll_init = dsi_pll_7nm_init,
> + .save_pll_state = dsi_7nm_pll_save_state,
> + .restore_pll_state = dsi_7nm_pll_restore_state,
> + .set_continuous_clock = dsi_7nm_set_continuous_clock,
> + },
> + .min_pll_rate = 600000000UL,
> +#ifdef CONFIG_64BIT
> + .max_pll_rate = 5000000000UL,
> +#else
> + .max_pll_rate = ULONG_MAX,
> +#endif
> + .io_start = { 0xae94400, 0xae96400 },
> + .num_dsi_phy = 2,
> + .quirks = DSI_PHY_7NM_QUIRK_V4_3,
> +};
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