clk: qcom: dispcc: Update the transition delay for MDSS GDSC
authorTaniya Das <tdas@codeaurora.org>
Wed, 23 Feb 2022 18:56:06 +0000 (00:26 +0530)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 16 Mar 2022 13:23:35 +0000 (14:23 +0100)
commitea45b38caf2bf213568451fb5d0e0db3ee7924f3
treea7b8b53f1fdec475186f7dd6515d1620f798b202
parentba24eb3cc95c7138957ade43fd815588372e4db0
clk: qcom: dispcc: Update the transition delay for MDSS GDSC

[ Upstream commit 6e6fec3f961c00ca34ffb4bf2ad9febb4b499f8d ]

On SC7180 we observe black screens because the gdsc is being
enabled/disabled very rapidly and the GDSC FSM state does not work as
expected. This is due to the fact that the GDSC reset value is being
updated from SW.

The recommended transition delay for mdss core gdsc updated for
SC7180/SC7280/SM8250.

Fixes: dd3d06622138 ("clk: qcom: Add display clock controller driver for SC7180")
Fixes: 1a00c962f9cd ("clk: qcom: Add display clock controller driver for SC7280")
Fixes: 80a18f4a8567 ("clk: qcom: Add display clock controller driver for SM8150 and SM8250")
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Link: https://lore.kernel.org/r/20220223185606.3941-2-tdas@codeaurora.org
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
[sboyd@kernel.org: lowercase hex]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/clk/qcom/dispcc-sc7180.c
drivers/clk/qcom/dispcc-sc7280.c
drivers/clk/qcom/dispcc-sm8250.c