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Date: Thu, 25 Jul 2019 11:07:34 -0300
From: Fabio Estevam <festevam@...il.com>
To: Dafna Hirschfeld <dafna.hirschfeld@...labora.com>
Cc: Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Sascha Hauer <kernel@...gutronix.de>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@...ts.infradead.org>,
Ezequiel Garcia <ezequiel@...labora.com>, kernel@...labora.com,
Gary Bisson <gary.bisson@...ndarydevices.com>
Subject: Re: [PATCH 2/2] arm64: dts: imx: Add i.mx8mq nitrogen8m basic dts support
Hi Dafna,
On Wed, Jul 24, 2019 at 2:51 PM Dafna Hirschfeld
<dafna.hirschfeld@...labora.com> wrote:
>
> From: dafna <dafna.hirschfeld@...labora.com>
>
> Add basic dts support for i.MX8MQ NITROGEN8M.
>
> Signed-off-by: Gary Bisson <gary.bisson@...ndarydevices.com>
> Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@...labora.com>
Your From and Signed-off-by tags do not match.
> ---
> arch/arm64/boot/dts/freescale/Makefile | 1 +
> .../arm64/boot/dts/freescale/imx8mq-nitrogen8m.dts | 411 +++++++++++++++++++++
> 2 files changed, 412 insertions(+)
> create mode 100644 arch/arm64/boot/dts/freescale/imx8mq-nitrogen8m.dts
>
> diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
> index c043aca66572..54a5c18c5c30 100644
> --- a/arch/arm64/boot/dts/freescale/Makefile
> +++ b/arch/arm64/boot/dts/freescale/Makefile
> @@ -26,3 +26,4 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mq-librem5-devkit.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx8mq-zii-ultra-rmb3.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx8mq-zii-ultra-zest.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx8qxp-mek.dtb
> +dtb-$(CONFIG_ARCH_MXC) += imx8mq-nitrogen8m.dtb
Please keep it in alphabetical order.
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen8m.dts b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen8m.dts
> new file mode 100644
> index 000000000000..cfd4915d2916
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen8m.dts
Isn't the 8m in the end redundant? What about just naming it
imx8mq-nitrogen.dts instead?
> +&a53_opp_table {
> + opp-1500000000 {
> + opp-hz = /bits/ 64 <1500000000>;
> + opp-microvolt = <1000000>;
> + };
> +
> + opp-1000000000 {
> + opp-hz = /bits/ 64 <1000000000>;
> + opp-microvolt = <900000>;
> + };
Couldn't this be dropped and just use the operational points defined
at imx8mq.dtsi?
> +};
> +
> +&iomuxc {
We usually prefer to place iomux as the last node.
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_hog>;
You could place the "pinctrl_hog: hoggrp {" here
> +&i2c1 {
> + clock-frequency = <400000>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_i2c1>;
> + status = "okay";
> +
> + i2cmux@70 {
> + compatible = "pca9546";
You missed the manufacturer string: "nxp,pca9546"
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_i2c1_pca9546>;
> + reg = <0x70>;
> + reset-gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + i2c1a: i2c1@0 {
> + reg = <0>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg_arm_dram: fan53555@60 {
Node names should be generic:
regulator@60
> + compatible = "fcs,fan53555";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_reg_arm_dram>;
> + reg = <0x60>;
> + regulator-min-microvolt = <900000>;
> + regulator-max-microvolt = <1000000>;
> + regulator-always-on;
> + vsel-gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>;
> + };
> + };
> +
> + i2c1b: i2c1@1 {
> + reg = <1>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg_dram_1p1v: fan53555@60 {
regulator@60
> + compatible = "fcs,fan53555";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_reg_dram_1p1v>;
> + reg = <0x60>;
> + regulator-min-microvolt = <1100000>;
> + regulator-max-microvolt = <1100000>;
> + regulator-always-on;
> + vsel-gpios = <&gpio2 11 GPIO_ACTIVE_HIGH>;
> + };
> + };
> +
> + i2c1c: i2c1@2 {
> + reg = <2>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg_soc_gpu_vpu: fan53555@60 {
regulator@60
> +&usdhc1 {
> + bus-width = <8>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_usdhc1>;
> + non-removable;
> + vqmmc-1-8-v;
This property does not exist. Please remove it.
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