Thread (34 messages) 34 messages, 6 authors, 2021-11-23

Re: [PATCH v2 12/13] ARM: dts: imx: add i.MXRT1050-EVK support

From: Jesse Taube <hidden>
Date: 2021-11-03 02:19:15
Also in: linux-clk, linux-devicetree, linux-gpio, linux-mmc, linux-serial, lkml


On 11/2/21 19:54, Jesse Taube wrote:

On 11/2/21 19:42, Fabio Estevam wrote:
quoted
On Tue, Nov 2, 2021 at 7:57 PM Jesse Taube [off-list ref] wrote:
quoted
+/ {
+       model = "NXP IMXRT1050-evk board";
+       compatible = "fsl,imxrt1050-evk", "fsl,imxrt1050";
+
+       chosen {
+               bootargs = "root=/dev/ram";
No need to pass bootargs here.
quoted
+               stdout-path = &lpuart1;
+       };
+
+       aliases {
+               gpio0 = &gpio1;
+               gpio1 = &gpio2;
+               gpio2 = &gpio3;
+               gpio3 = &gpio4;
+               gpio4 = &gpio5;
+               mmc0 = &usdhc1;
+               serial0 = &lpuart1;
+       };
+
+       memory@0 {
memory@80000000

Building with W=1 should give a dtc warning due to the unit address
and reg mismatch.
Oh that makes sense.
I guess I'm going to have to figure out how to get warnings to work as I
couldn't last time I tried.
Oh i got it to work I did something dumb...
I didn't give a warning for this i still changed it of course.
quoted
quoted
+               device_type = "memory";
+               reg = <0x80000000 0x2000000>;
+       };
+
Unneeded blank line.
quoted
+
+&iomuxc {
+       pinctrl-names = "default";
+
+       imxrt1050-evk {
No need for this imxrt1050-evk container.
I was wondering if that was needed, u-boot has it, good to know.
quoted
quoted
+               pinctrl_lpuart1: lpuart1grp {
+                       fsl,pins = <
+                               MXRT1050_IOMUXC_GPIO_AD_B0_12_LPUART1_TXD
+                                       0xf1
Put it on a single line. It helps readability. Same applies globally.
quoted
+&usdhc1 {
+       pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
+       pinctrl-0 = <&pinctrl_usdhc0>;
+       pinctrl-1 = <&pinctrl_usdhc0>;
+       pinctrl-2 = <&pinctrl_usdhc0>;
+       pinctrl-3 = <&pinctrl_usdhc0>;
+       status = "okay";
+
+       cd-gpios = <&gpio2 28 GPIO_ACTIVE_LOW>;
Make 'status' to be the last property. Remove the blank line.
quoted
+               edma1: dma-controller@400e8000 {
+                       #dma-cells = <2>;
+                       compatible = "fsl,imx7ulp-edma";
+                       reg = <0x400e8000 0x4000>,
+                               <0x400ec000 0x4000>;
+                       dma-channels = <32>;
+                       interrupts = <0>,
+                               <1>,
+                               <2>,
+                               <3>,
+                               <4>,
+                               <5>,
+                               <6>,
+                               <7>,
+                               <8>,
+                               <9>,
+                               <10>,
+                               <11>,
+                               <12>,
+                               <13>,
+                               <14>,
+                               <15>,
+                               <16>;
Please group more elements into the same line.

Putting one entry per line makes it extremely long.
quoted
+               gpio5: gpio@400c0000 {
+                       compatible = "fsl,imxrt-gpio", "fsl,imx35-gpio";
+                       reg = <0x400c0000 0x4000>;
+                       interrupts = <88>,
+                               <89>;
Put the interrupts into a single line.
Ah all these make sense, will fix, sry about that.
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