Hi Shawn,
-----Original Message-----
From: Shawn Guo <shawnguo@xxxxxxxxxx>
Sent: 2019年5月23日 16:01
To: Xiaowei Bao <xiaowei.bao@xxxxxxx>
Cc: Leo Li <leoyang.li@xxxxxxx>; robh+dt@xxxxxxxxxx; mark.rutland@xxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
Subject: [EXT] Re: [PATCHv2] arm64: dts: ls1028a: add flexspi nodes
Caution: EXT Email
On Wed, May 15, 2019 at 11:09:25AM +0000, Xiaowei Bao wrote:
> From: Xiaowei Bao <xiaowei.bao@xxxxxxx>
>
> Add fspi node property for LS1028A SoC for FlexSPI driver.
> Property added for the FlexSPI controller and for the connected slave
> device for the LS1028ARDB and LS1028AQDS target.
> This is having one SPI-NOR flash device, mt35xu02g connected at CS0.
>
> Signed-off-by: Xiaowei Bao <xiaowei.bao@xxxxxxx>
> ---
> v2:
> - modify the commit message and the dts format.
>
> arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts | 15 +++++++++++++++
> arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts | 15 +++++++++++++++
> arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 12 ++++++++++++
> 3 files changed, 42 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts
> b/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts
> index 5bcd491..6e12806 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts
> @@ -158,6 +158,21 @@
> };
> };
>
> +&fspi {
Keep the labeling node sort alphabetically. That said, &fspi should be added before &i2c0.
> + status = "okay";
Please have newline between property and child node.
> + mt35xu02g: flash@0 {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "spansion,m25p80";
Please start properties with compatible.
[Xiaowei Bao] I have submit the v3 patch to fix this issue.
> + m25p,fast-read;
> + spi-max-frequency = <20000000>;
> + reg = <0>;
> + /* The following setting enables 1-1-8 (CMD-ADDR-DATA) mode */
> + spi-rx-bus-width = <8>; /* 8 SPI Rx lines */
> + spi-tx-bus-width = <1>; /* 1 SPI Tx line */
> + };
> +};
> +
> &sai1 {
> status = "okay";
> };
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts
> b/arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts
> index 25d2370..5d39616 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a-rdb.dts
> @@ -136,6 +136,21 @@
> };
> };
>
> +&fspi {
> + status = "okay";
> + mt35xu02g: flash@0 {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "spansion,m25p80";
> + m25p,fast-read;
> + spi-max-frequency = <20000000>;
> + reg = <0>;
> + /* The following setting enables 1-1-8 (CMD-ADDR-DATA) mode */
> + spi-rx-bus-width = <8>; /* 8 SPI Rx lines */
> + spi-tx-bus-width = <1>; /* 1 SPI Tx line */
> + };
> +};
> +
> &duart0 {
> status = "okay";
> };
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> index ba71a33..a27cd60 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> @@ -109,6 +109,18 @@
> };
> };
>
> + fspi: spi@20c0000 {
Are you sure you want to add this device node outside of 'soc' node?
> + compatible = "nxp,lx2160a-fspi", "simple-bus";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x0 0x20c0000 0x0 0x10000>,
> + <0x0 0x20000000 0x0 0x10000000>;
Fix the indentation to git it aligned with above '<'.
[Xiaowei Bao] this is aligned, I don't know why it is not aligned in email. Thanks.
> + reg-names = "FSPI", "FSPI-memory";
> + interrupts = <0 25 0x4>; /* Level high type */
interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
Shawn
> + clocks = <&clockgen 4 3>, <&clockgen 4 3>;
> + clock-names = "fspi_en", "fspi";
> + };
> +
> soc: soc {
> compatible = "simple-bus";
> #address-cells = <2>;
> --
> 1.7.1
>
