| Message ID | 20240804-sm8350-fixes-v1-3-1149dd8399fe@linaro.org (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | arm64: qcom: set of fixes for SM8350 platform | expand |
On 8/3/2024 10:40 PM, Dmitry Baryshkov wrote: > According to the display-drivers, 5nm DSI PLL (v4.2, v4.3) have > different boundaries for pll_clock_inverters programming. Follow the > vendor code and use correct values. > > Fixes: 2f9ae4e395ed ("drm/msm/dsi: add support for DSI-PHY on SM8350 and SM8450") > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> > --- > drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 12 +++++++++++- > 1 file changed, 11 insertions(+), 1 deletion(-) > > 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 3b59137ca674..031446c87dae 100644 > --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c > +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c > @@ -135,7 +135,7 @@ static void dsi_pll_calc_dec_frac(struct dsi_pll_7nm *pll, struct dsi_pll_config > config->pll_clock_inverters = 0x00; > else > config->pll_clock_inverters = 0x40; > - } else { > + } else if (pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_1) { > if (pll_freq <= 1000000000ULL) > config->pll_clock_inverters = 0xa0; > else if (pll_freq <= 2500000000ULL) > @@ -144,6 +144,16 @@ static void dsi_pll_calc_dec_frac(struct dsi_pll_7nm *pll, struct dsi_pll_config > config->pll_clock_inverters = 0x00; > else > config->pll_clock_inverters = 0x40; > + } else { > + /* 4.2, 4.3 */ > + if (pll_freq <= 1000000000ULL) > + config->pll_clock_inverters = 0xa0; > + else if (pll_freq <= 2500000000ULL) > + config->pll_clock_inverters = 0x20; > + else if (pll_freq <= 3500000000ULL) > + config->pll_clock_inverters = 0x00; > + else > + config->pll_clock_inverters = 0x40; > } Sorry for the delay, my request for the docs was first rejected for some reason :) Now I finally got access and this matches the docs Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
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 3b59137ca674..031446c87dae 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c @@ -135,7 +135,7 @@ static void dsi_pll_calc_dec_frac(struct dsi_pll_7nm *pll, struct dsi_pll_config config->pll_clock_inverters = 0x00; else config->pll_clock_inverters = 0x40; - } else { + } else if (pll->phy->cfg->quirks & DSI_PHY_7NM_QUIRK_V4_1) { if (pll_freq <= 1000000000ULL) config->pll_clock_inverters = 0xa0; else if (pll_freq <= 2500000000ULL) @@ -144,6 +144,16 @@ static void dsi_pll_calc_dec_frac(struct dsi_pll_7nm *pll, struct dsi_pll_config config->pll_clock_inverters = 0x00; else config->pll_clock_inverters = 0x40; + } else { + /* 4.2, 4.3 */ + if (pll_freq <= 1000000000ULL) + config->pll_clock_inverters = 0xa0; + else if (pll_freq <= 2500000000ULL) + config->pll_clock_inverters = 0x20; + else if (pll_freq <= 3500000000ULL) + config->pll_clock_inverters = 0x00; + else + config->pll_clock_inverters = 0x40; } config->decimal_div_start = dec;
According to the display-drivers, 5nm DSI PLL (v4.2, v4.3) have different boundaries for pll_clock_inverters programming. Follow the vendor code and use correct values. Fixes: 2f9ae4e395ed ("drm/msm/dsi: add support for DSI-PHY on SM8350 and SM8450") Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> --- drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)