Re: [PATCH v4 3/4] arm64: dts: qcom: sm6125: Add apps_smmu with streamID to SDHCI 1/2 nodes

[Marijn Suijten]

On 2022-12-16 22:58:18, Marijn Suijten wrote:
> When enabling the APPS SMMU the mainline driver reconfigures the SMMU
> from its bootloader configuration, loosing the stream mapping for (among
> which) the SDHCI hardware and breaking its ADMA feature.  This feature
> can be disabled with:
> 
>     sdhci.debug_quirks=0x40
> 
> But it is of course desired to have this feature enabled and working
> through the SMMU.
> 
> Signed-off-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/qcom/sm6125.dtsi | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm6125.dtsi b/arch/arm64/boot/dts/qcom/sm6125.dtsi
> index 347665c2067c..f560499cc0ca 100644
> --- a/arch/arm64/boot/dts/qcom/sm6125.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm6125.dtsi
> @@ -468,6 +468,7 @@ sdhc_1: mmc@4744000 {
>  				 <&gcc GCC_SDCC1_APPS_CLK>,
>  				 <&xo_board>;
>  			clock-names = "iface", "core", "xo";
> +			iommus = <&apps_smmu 0x160 0>;

I'll make the mask 0x0 (same below) in the next revision, please do not
apply this patch.

- Marijn

>  			power-domains = <&rpmpd SM6125_VDDCX>;
>  
> @@ -494,6 +495,7 @@ sdhc_2: mmc@4784000 {
>  				 <&gcc GCC_SDCC2_APPS_CLK>,
>  				 <&xo_board>;
>  			clock-names = "iface", "core", "xo";
> +			iommus = <&apps_smmu 0x180 0>;
>  
>  			pinctrl-0 = <&sdc2_on_state>;
>  			pinctrl-1 = <&sdc2_off_state>;
> -- 
> 2.39.0
>