Hi,
* Vignesh R <vigneshr@xxxxxx> [160224 20:49]:
> According to Data Manual(SPRS915P) of AM57x, TI QSPI controller on
> DRA74(rev 1.1+) can support up to 64MHz in MODE-0, whereas MODE-3 is
> limited to 48MHz. Hence, switch to MODE-0 for better throughput.
>
> Signed-off-by: Vignesh R <vigneshr@xxxxxx>
> ---
> arch/arm/boot/dts/dra7-evm.dts | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
> index cfc24e52244e..15f10bdc8c31 100644
> --- a/arch/arm/boot/dts/dra7-evm.dts
> +++ b/arch/arm/boot/dts/dra7-evm.dts
> @@ -653,15 +653,13 @@
> pinctrl-names = "default";
> pinctrl-0 = <&qspi1_pins>;
>
> - spi-max-frequency = <48000000>;
> + spi-max-frequency = <64000000>;
> m25p80@0 {
> compatible = "s25fl256s1";
> - spi-max-frequency = <48000000>;
> + spi-max-frequency = <64000000>;
> reg = <0>;
> spi-tx-bus-width = <1>;
> spi-rx-bus-width = <4>;
> - spi-cpol;
> - spi-cpha;
> #address-cells = <1>;
> #size-cells = <1>;
>
Do we have any earlier pre DRA74(rev 1.1)versions in use too?
What about the spi-cpol and spi-cpha changes? Those should be
at least documented?
Regards,
Tony
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