From: Johan Hovold <johan+linaro@kernel.org>
To: Bjorn Andersson <andersson@kernel.org>
Cc: Andy Gross <agross@kernel.org>,
Konrad Dybcio <konrad.dybcio@somainline.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Brian Masney <bmasney@redhat.com>,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Johan Hovold <johan+linaro@kernel.org>
Subject: [PATCH] arm64: dts: qcom: sc8280xp: fix ufs_card_phy ref clock
Date: Wed, 5 Oct 2022 16:33:05 +0200 [thread overview]
Message-ID: <20221005143305.388-1-johan+linaro@kernel.org> (raw)
The GCC_UFS_REF_CLKREF_CLK must be enabled or the second UFS controller
fails to enumerate on sa8295p-adp.
Note that the vendor kernel enables both GCC_UFS_REF_CLKREF_CLK and
GCC_UFS_1_CARD_CLKREF_CLK and it is possible that the former should be
modelled as a parent of the latter. The clock driver also has a
GCC_UFS_CARD_CLKREF_CLK clock which the firmware appears to enable on
the ADP.
The usual lack of documentation for Qualcomm SoCs makes this a highly
annoying guessing game, but as the second controller works on the ADP
without either card reference clock enabled, only enable
GCC_UFS_REF_CLKREF_CLK for now.
Fixes: 152d1faf1e2f ("arm64: dts: qcom: add SC8280XP platform")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
The related issue for the first controller is being fixed here:
https://lore.kernel.org/lkml/20220830180120.2082734-1-bmasney@redhat.com/T/#u
Johan
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 cf7ef37c11ec..917f1feac6ac 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
@@ -960,7 +960,7 @@ ufs_card_phy: phy@1da7000 {
ranges;
clock-names = "ref",
"ref_aux";
- clocks = <&gcc GCC_UFS_1_CARD_CLKREF_CLK>,
+ clocks = <&gcc GCC_UFS_REF_CLKREF_CLK>,
<&gcc GCC_UFS_CARD_PHY_AUX_CLK>;
resets = <&ufs_card_hc 0>;
--
2.35.1
next reply other threads:[~2022-10-05 14:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-05 14:33 Johan Hovold [this message]
2022-10-06 14:38 ` [PATCH] arm64: dts: qcom: sc8280xp: fix ufs_card_phy ref clock Brian Masney
2022-10-07 19:29 ` Konrad Dybcio
2022-10-18 3:05 ` Bjorn Andersson
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