Re: [PATCH 11/18] arm64: dts: qcom: msm8994-octagon: Add uSD card and disable HS400 on eMMC
From: Pavel Machek <hidden>
Date: 2021-02-18 16:28:55
Also in:
linux-arm-msm, lkml, phone-devel
On Sun 2021-01-31 02:38:42, Konrad Dybcio wrote:
quoted hunk ↗ jump to hunk
From: Gustave Monce <redacted> Lumia 950/XL, like other phones, ship with different storage chips. Some of them are not capable of stable operation at HS400. Disable it. Signed-off-by: Gustave Monce <redacted> Signed-off-by: Konrad Dybcio <redacted> --- .../dts/qcom/msm8994-msft-lumia-octagon.dtsi | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+)diff --git a/arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi b/arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi index bf6e63a23600..004a42261cef 100644 --- a/arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi@@ -684,6 +684,27 @@ vph_pwr_bbyp: boost-bypass { &sdhc1 { status = "okay"; + + /* + * This device is shipped with HS400 capabable eMMCs
Typo, should be "capable"?
+ * However various brands have been used in various product batches, + * including a Samsung eMMC (BGND3R) which features a quirk with HS400. + * Set the speed to HS200 as a safety measure. + */
And this makes little sense. "This device is often shipped..."? Best regards, Pavel -- http://www.livejournal.com/~pavelmachek
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