On 3/5/21 9:09 PM, Pratyush Yadav wrote:
> Set the Tx bus width to 8 so 8D-8D-8D mode can be selected. Change the
> frequency to 25 MHz. This is the frequency that the flash has been
> successfully tested with in Octal DTR mode. The total performance should
> still increase since 8D-8D-8D mode should be at least twice as fast as
> 1S-1S-8S mode.
>
> Signed-off-by: Pratyush Yadav <p.yadav@xxxxxx>
> ---
>
Reviewed-by: Vignesh Raghavendra <vigneshr@xxxxxx>
> Notes:
> No changes in v2.
>
> arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi
> index 57720e6a04c5..2fee2906183d 100644
> --- a/arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi
> @@ -174,9 +174,9 @@ &ospi0 {
> flash@0{
> compatible = "jedec,spi-nor";
> reg = <0x0>;
> - spi-tx-bus-width = <1>;
> + spi-tx-bus-width = <8>;
> spi-rx-bus-width = <8>;
> - spi-max-frequency = <40000000>;
> + spi-max-frequency = <25000000>;
> cdns,tshsl-ns = <60>;
> cdns,tsd2d-ns = <60>;
> cdns,tchsh-ns = <60>;
>
