Re: [PATCH v2 2/5] riscv: dts: starfive: jh7110-common: qspi flash setting read-delay 2 cycles max 100MHz
From: Emil Renner Berthing
Date: Wed Feb 05 2025 - 05:19:21 EST
E Shattow wrote:
> Sync qspi flash setting to read-delay=2 and spi-max-frequency 100MHz for
> better compatibility with operating system and downstream boot loader SPL
> secondary program loader.
Here you should be explaining why these values better describe the hardware. To
me this just reads as "u-boot does this, so let's do the same" whith doesn't
really explain anything.
/Emil
>
> Signed-off-by: E Shattow <e@xxxxxxxxxxxx>
> Reviewed-by: Hal Feng <hal.feng@xxxxxxxxxxxxxxxx>
> ---
> arch/riscv/boot/dts/starfive/jh7110-common.dtsi | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi
> index a5661b677687..8a59c3001339 100644
> --- a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi
> +++ b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi
> @@ -317,8 +317,8 @@ &qspi {
> nor_flash: flash@0 {
> compatible = "jedec,spi-nor";
> reg = <0>;
> - cdns,read-delay = <5>;
> - spi-max-frequency = <12000000>;
> + cdns,read-delay = <2>;
> + spi-max-frequency = <100000000>;
> cdns,tshsl-ns = <1>;
> cdns,tsd2d-ns = <1>;
> cdns,tchsh-ns = <1>;
> --
> 2.47.2
>