According to the vendor kernel [1] , the alt_iface clock should be enabled together with the rest of HPD clocks, to make HPD to work properly. [1] https://git.codelinaro.org/clo/la/kernel/msm-3.18/-/commit/e07a5487e521e57f76083c0a6e2f995414ac6d03 Reviewed-by: Jessica Zhang <quic_jesszhan@xxxxxxxxxxx> Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> --- drivers/gpu/drm/msm/hdmi/hdmi.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c index 9e9900882687fa2ae4a734d5cf10b5bae5af2f87..ebf9d8162c6e5759a3780c74354b6c159598750f 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c @@ -233,9 +233,9 @@ static const struct hdmi_platform_config hdmi_tx_8960_config = { }; static const char * const pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"}; -static const char * const pwr_clk_names_8x74[] = {"extp", "alt_iface"}; -static const char * const hpd_clk_names_8x74[] = {"iface", "core", "mdp_core"}; -static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0}; +static const char * const pwr_clk_names_8x74[] = {"extp"}; +static const char * const hpd_clk_names_8x74[] = {"iface", "core", "mdp_core", "alt_iface"}; +static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0, 0}; static const struct hdmi_platform_config hdmi_tx_8974_config = { HDMI_CFG(pwr_reg, 8x74), -- 2.39.5
