On Thu 13 Jan 17:33 CST 2022, Petr Vorel wrote:
> Although downstream supports HS400, there are overclocking warnings when
> using mmc-hs400-1_8v:
>
> mmc0: Card appears overclocked; req 200000000 Hz, actual 384000000 Hz
> mmc0: Card appears overclocked; req 200000000 Hz, actual 384000000 Hz
> mmc0: Card appears overclocked; req 200000000 Hz, actual 384000000 Hz
> mmc0: Card appears overclocked; req 400000000 Hz, actual 768000000 Hz
> mmc0: Card appears overclocked; req 400000000 Hz, actual 768000000 Hz
> mmc0: new HS400 MMC card at address 0001
>
> Using HS200 (i.e. mmc-hs200-1_8v or mmc-ddr-1_8v) would reduce them:
>
> mmc0: Card appears overclocked; req 200000000 Hz, actual 384000000 Hz
> mmc0: Card appears overclocked; req 200000000 Hz, actual 384000000 Hz
> mmc0: new HS200 MMC card at address 0001
>
> But as the problem is probably elsewhere (bullhead behaves the same),
> keep mmc-hs400-1_8v.
>
> Angler does not have SD card, thus explicitly disable sdhc2.
>
> Signed-off-by: Petr Vorel <petr.vorel@xxxxxxxxx>
> ---
> .../dts/qcom/msm8994-huawei-angler-rev-101.dts | 16 ++++++++++++++++
> 1 file changed, 16 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/msm8994-huawei-angler-rev-101.dts b/arch/arm64/boot/dts/qcom/msm8994-huawei-angler-rev-101.dts
> index 0e3dd48f0dbf..5ce3dc169bb4 100644
> --- a/arch/arm64/boot/dts/qcom/msm8994-huawei-angler-rev-101.dts
> +++ b/arch/arm64/boot/dts/qcom/msm8994-huawei-angler-rev-101.dts
> @@ -7,6 +7,7 @@
> /dts-v1/;
>
> #include "msm8994.dtsi"
> +#include <dt-bindings/gpio/gpio.h>
>
> /* Angler's firmware does not report where the memory is allocated */
> /delete-node/ &cont_splash_mem;
> @@ -41,3 +42,18 @@ serial@f991e000 {
> &tlmm {
> gpio-reserved-ranges = <85 4>;
> };
> +
> +/*
> + * Although downstream supports also HS400 there are fewer overclocking
> + * warnings when used DDR, also LK bootloader reports DDR mode.
> + */
> +&sdhc1 {
> + status = "okay";
> +
> + mmc-hs400-1_8v;
> +};
> +
> +/* Angler does not have SD card */
> +&sdhc2 {
But isn't &sdhc2 already disabled from msm8992.dtsi and msm8994.dtsi?
Regards,
Bjorn
> + status = "disabled";
> +};
> --
> 2.34.1
>
