From: Brian Masney <bmasney@xxxxxxxxxx>
[ Upstream commit f3aa975e230e060c07dcfdf3fe92b59809422c13 ]
The first UFS host controller fails to start on the SA8540P automotive
board (QDrive3) due to the following errors:
ufshcd-qcom 1d84000.ufs: ufshcd_query_flag: Sending flag query for idn 18 failed, err = 253
ufshcd-qcom 1d84000.ufs: ufshcd_query_flag: Sending flag query for idn 18 failed, err = 253
ufshcd-qcom 1d84000.ufs: ufshcd_query_flag: Sending flag query for idn 18 failed, err = 253
ufshcd-qcom 1d84000.ufs: ufshcd_query_flag_retry: query attribute, opcode 5, idn 18, failed
with error 253 after 3 retries
The system eventually fails to boot with the warning:
gcc_ufs_phy_axi_clk status stuck at 'off'
This issue can be worked around by adding clk_ignore_unused to the
kernel command line since the system firmware sets up this clock for us.
Let's fix this issue by updating the ref clock on ufs_mem_phy. Note
that the downstream MSM 5.4 sources list this as ref_clk_parent. With
this patch, the SA8540P is able to be booted without clk_ignore_unused.
Signed-off-by: Brian Masney <bmasney@xxxxxxxxxx>
Fixes: 152d1faf1e2f ("arm64: dts: qcom: add SC8280XP platform")
Tested-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Reviewed-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Signed-off-by: Bjorn Andersson <andersson@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221006145529.755521-1-bmasney@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
index 92cbe84de0e5..cdc395d53c5a 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
@@ -891,7 +891,7 @@ ufs_mem_phy: phy@1d87000 {
ranges;
clock-names = "ref",
"ref_aux";
- clocks = <&rpmhcc RPMH_CXO_CLK>,
+ clocks = <&gcc GCC_UFS_REF_CLKREF_CLK>,
<&gcc GCC_UFS_PHY_PHY_AUX_CLK>;
resets = <&ufs_mem_hc 0>;
--
2.35.1
