Hi Bjorn,
> 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?
Yes it's disabled, thus this is not needed.
I'll send v2 of this, where I remove this.
Kind regards,
Petr
> Regards,
> Bjorn
