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drm/msm/dsi: add support for DSI-PHY on SM8550

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SM8550 use a 4nm DSI PHYs, which share register definitions
with 7nm DSI PHYs. Rather than duplicating the driver, handle
4nm variant inside the common 5+7nm driver.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/517515/
Link: https://lore.kernel.org/r/20230103-topic-sm8550-upstream-mdss-dsi-v3-6-660c3bcb127f@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
This commit is contained in:
Neil Armstrong 2023-01-09 11:15:22 +01:00 committed by Dmitry Baryshkov
parent 93f0ca6fd6
commit 8b034e6771
4 changed files with 79 additions and 16 deletions
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4
drivers/gpu/drm/msm/Kconfig
View file

@ -140,11 +140,11 @@ 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/5nm PHY driver in MSM DRM"
bool "Enable DSI 7nm/5nm/4nm PHY driver in MSM DRM"
depends on DRM_MSM_DSI
default y
help
Choose this option if DSI PHY on SM8150/SM8250/SM8350/SM8450/SC7280
Choose this option if DSI PHY on SM8150/SM8250/SM8350/SM8450/SM8550/SC7280
is used on the platform.
config DRM_MSM_HDMI

2
drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
View file

@ -573,6 +573,8 @@ static const struct of_device_id dsi_phy_dt_match[] = {
.data = &dsi_phy_5nm_8350_cfgs },
{ .compatible = "qcom,sm8450-dsi-phy-5nm",
.data = &dsi_phy_5nm_8450_cfgs },
{ .compatible = "qcom,sm8550-dsi-phy-4nm",
.data = &dsi_phy_4nm_8550_cfgs },
#endif
{}
};

1
drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
View file

@ -59,6 +59,7 @@ 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;
extern const struct msm_dsi_phy_cfg dsi_phy_4nm_8550_cfgs;
struct msm_dsi_dphy_timing {
u32 clk_zero;

88
drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
View file

@ -47,6 +47,8 @@
#define DSI_PHY_7NM_QUIRK_V4_2 BIT(2)
/* Hardware is V4.3 */
#define DSI_PHY_7NM_QUIRK_V4_3 BIT(3)
/* Hardware is V5.2 */
#define DSI_PHY_7NM_QUIRK_V5_2 BIT(4)
struct dsi_pll_config {
bool enable_ssc;
@ -124,14 +126,25 @@ static void dsi_pll_calc_dec_frac(struct dsi_pll_7nm *pll, struct dsi_pll_config
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;
else if (pll_freq <= 2500000000ULL)
config->pll_clock_inverters = 0x20;
else if (pll_freq <= 3020000000ULL)
config->pll_clock_inverters = 0x00;
else
config->pll_clock_inverters = 0x40;
else if ((pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V5_2)) {
if (pll_freq <= 1300000000ULL)
config->pll_clock_inverters = 0xa0;
else if (pll_freq <= 2500000000ULL)
config->pll_clock_inverters = 0x20;
else if (pll_freq <= 4000000000ULL)
config->pll_clock_inverters = 0x00;
else
config->pll_clock_inverters = 0x40;
} else {
if (pll_freq <= 1000000000ULL)
config->pll_clock_inverters = 0xa0;
else if (pll_freq <= 2500000000ULL)
config->pll_clock_inverters = 0x20;
else if (pll_freq <= 3020000000ULL)
config->pll_clock_inverters = 0x00;
else
config->pll_clock_inverters = 0x40;
}
config->decimal_div_start = dec;
config->frac_div_start = frac;
@ -222,6 +235,13 @@ static void dsi_pll_config_hzindep_reg(struct dsi_pll_7nm *pll)
vco_config_1 = 0x01;
}
if ((pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V5_2)) {
if (pll->vco_current_rate < 1557000000ULL)
vco_config_1 = 0x08;
else
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);
@ -860,7 +880,8 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy,
pr_warn("PLL turned on before configuring PHY\n");
/* Request for REFGEN READY */
if (phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_3) {
if ((phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_3) ||
(phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V5_2)) {
dsi_phy_write(phy->base + REG_DSI_7nm_PHY_CMN_GLBL_DIGTOP_SPARE10, 0x1);
udelay(500);
}
@ -894,7 +915,19 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy,
lane_ctrl0 = 0x1f;
}
if (phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_3) {
if ((phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V5_2)) {
if (phy->cphy_mode) {
vreg_ctrl_0 = 0x45;
vreg_ctrl_1 = 0x45;
glbl_rescode_top_ctrl = 0x00;
glbl_rescode_bot_ctrl = 0x00;
} else {
vreg_ctrl_0 = 0x44;
vreg_ctrl_1 = 0x19;
glbl_rescode_top_ctrl = less_than_1500_mhz ? 0x3c : 0x03;
glbl_rescode_bot_ctrl = less_than_1500_mhz ? 0x38 : 0x3c;
}
} else if ((phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_3)) {
if (phy->cphy_mode) {
glbl_rescode_top_ctrl = less_than_1500_mhz ? 0x3d : 0x01;
glbl_rescode_bot_ctrl = less_than_1500_mhz ? 0x38 : 0x3b;
@ -943,9 +976,8 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy,
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_RBUF_CTRL, 0x00);
/* program CMN_CTRL_4 for minor_ver 2 chipsets*/
data = dsi_phy_read(base + REG_DSI_7nm_PHY_CMN_REVISION_ID0);
data = data & (0xf0);
if (data == 0x20)
if ((phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V5_2) ||
(dsi_phy_read(base + REG_DSI_7nm_PHY_CMN_REVISION_ID0) & (0xf0)) == 0x20)
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_CTRL_4, 0x04);
/* Configure PHY lane swap (TODO: we need to calculate this) */
@ -1058,7 +1090,8 @@ static void dsi_7nm_phy_disable(struct msm_dsi_phy *phy)
dsi_phy_hw_v4_0_config_lpcdrx(phy, false);
/* Turn off REFGEN Vote */
if (phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_3) {
if ((phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_3) ||
(phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V5_2)) {
dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_GLBL_DIGTOP_SPARE10, 0x0);
wmb();
/* Delay to ensure HW removes vote before PHY shut down */
@ -1092,6 +1125,10 @@ static const struct regulator_bulk_data dsi_phy_7nm_97800uA_regulators[] = {
{ .supply = "vdds", .init_load_uA = 97800 },
};
static const struct regulator_bulk_data dsi_phy_7nm_98400uA_regulators[] = {
{ .supply = "vdds", .init_load_uA = 98400 },
};
const struct msm_dsi_phy_cfg dsi_phy_7nm_cfgs = {
.has_phy_lane = true,
.regulator_data = dsi_phy_7nm_36mA_regulators,
@ -1201,3 +1238,26 @@ const struct msm_dsi_phy_cfg dsi_phy_5nm_8450_cfgs = {
.num_dsi_phy = 2,
.quirks = DSI_PHY_7NM_QUIRK_V4_3,
};
const struct msm_dsi_phy_cfg dsi_phy_4nm_8550_cfgs = {
.has_phy_lane = true,
.regulator_data = dsi_phy_7nm_98400uA_regulators,
.num_regulators = ARRAY_SIZE(dsi_phy_7nm_98400uA_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 = { 0xae95000, 0xae97000 },
.num_dsi_phy = 2,
.quirks = DSI_PHY_7NM_QUIRK_V5_2,
};