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SubjectRe: [PATCH 12/14] ARM: dts: milbeaut: Add device tree set for the Milbeaut M10V board
On Sun, Nov 18, 2018 at 7:01 PM Sugaya Taichi
<sugaya.taichi@socionext.com> wrote:
>
> Add devicetree for Milbeaut M10V SoC and M10V Evaluation board.
>
> Signed-off-by: Sugaya Taichi <sugaya.taichi@socionext.com>
> ---
> arch/arm/boot/dts/Makefile | 1 +
> arch/arm/boot/dts/milbeaut-m10v-evb.dts | 35 +++
> arch/arm/boot/dts/milbeaut-m10v-evb.dtsi | 17 ++
> arch/arm/boot/dts/milbeaut-m10v.dtsi | 510 +++++++++++++++++++++++++++++++

I'm not seeing why you need this split into 3 files instead of 2.

> 4 files changed, 563 insertions(+)
> create mode 100644 arch/arm/boot/dts/milbeaut-m10v-evb.dts
> create mode 100644 arch/arm/boot/dts/milbeaut-m10v-evb.dtsi
> create mode 100644 arch/arm/boot/dts/milbeaut-m10v.dtsi

Build your dtb with 'W=12' and fix any warnings.

>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index b0e966d..ee6220b 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -1207,6 +1207,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
> mt7623n-bananapi-bpi-r2.dtb \
> mt8127-moose.dtb \
> mt8135-evbp1.dtb
> +dtb-$(CONFIG_MACH_M10V_EVB) += milbeaut-m10v-evb.dtb

ARM SoC maintainers,

Can we start at least start putting new SoCs in vendor subdirs? This
one doesn't appear to share anything.

> dtb-$(CONFIG_ARCH_ZX) += zx296702-ad1.dtb
> dtb-$(CONFIG_ARCH_ASPEED) += \
> aspeed-ast2500-evb.dtb \
> diff --git a/arch/arm/boot/dts/milbeaut-m10v-evb.dts b/arch/arm/boot/dts/milbeaut-m10v-evb.dts
> new file mode 100644
> index 0000000..af8d6e4
> --- /dev/null
> +++ b/arch/arm/boot/dts/milbeaut-m10v-evb.dts
> @@ -0,0 +1,35 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Socionext Milbeaut M10V Evaluation Board */
> +/dts-v1/;
> +#include "milbeaut-m10v-evb.dtsi"
> +
> +/ {
> + cpus {

cpus is not board specific.

> + cpu@0 {

Unit-address is wrong. Should be '@f00' to match reg.

> + device_type = "cpu";
> + compatible = "arm,cortex-a7";
> + reg = <0xf00>;
> + };
> + cpu@1 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a7";
> + reg = <0xf01>;
> + };
> +
> + cpu@2 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a7";
> + reg = <0xf02>;
> + };
> + cpu@3 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a7";
> + reg = <0xf03>;
> + };
> +
> + };
> + trampoline: trampoline@0x0000F100 {

Also, not board specific.

This should be under a simple-bus node. The unit-address should be '@f100'.

> + compatible = "socionext,smp-trampoline";
> + reg = <0x0000F100 0x100>;

Use lowercase hex.

> + };
> +};
> diff --git a/arch/arm/boot/dts/milbeaut-m10v-evb.dtsi b/arch/arm/boot/dts/milbeaut-m10v-evb.dtsi
> new file mode 100644
> index 0000000..fc35c0b
> --- /dev/null
> +++ b/arch/arm/boot/dts/milbeaut-m10v-evb.dtsi
> @@ -0,0 +1,17 @@
> +// SPDX-License-Identifier: GPL-2.0
> +#include "milbeaut-m10v.dtsi"
> +
> +/ {
> + model = "Socionext M10V EVB";
> + compatible = "socionext,sc2000a", "socionext,milbeaut-m10v-evb";

Wrong order. And these need to be documented.

> + interrupt-parent = <&gic>;
> + chosen {
> + bootargs = "consoleblank=0 loglevel=8 init=/sbin/finit root=/dev/mmcblk0p2 rootwait ro console=ttyUSI0,115200n8 console=/dev/tty1 ";

Most of these options look user specific and should be dropped. Use
'stdout-path' to specify the default console.

> + linux,initrd-start = <0x4A000000>;
> + linux,initrd-end = <0x4BF00000>;

initrd should be filled in by the bootloader.

> + };
> + memory {

Needs a unit-address.

> + device_type = "memory";
> + reg = <0x40000000 0x80000000>;
> + };
> +};
> diff --git a/arch/arm/boot/dts/milbeaut-m10v.dtsi b/arch/arm/boot/dts/milbeaut-m10v.dtsi
> new file mode 100644
> index 0000000..4745dc6
> --- /dev/null
> +++ b/arch/arm/boot/dts/milbeaut-m10v.dtsi
> @@ -0,0 +1,510 @@
> +// SPDX-License-Identifier: GPL-2.0
> +#include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/input/input.h>
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +#include "skeleton.dtsi"

Don't use skeleton.dtsi. It is deprecated.

> +
> +/ {
> + compatible = "socionext,sc2000a";
> + interrupt-parent = <&gic>;
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + };

Just move this to the other file with the cpu nodes.

> +
> +
> + gic: interrupt-controller@1d000000 {
> + compatible = "arm,cortex-a7-gic";
> + interrupt-controller;
> + #interrupt-cells = <3>;
> + reg = <0x1d001000 0x1000>, /* Distributer base and size */
> + <0x1d002000 0x1000>; /* CPU I/f base and size */
> + };
> +
> + m10v-clk-tree@ {

unit-address

> + compatible = "socionext,milbeaut-m10v-clk-regs";
> + reg = <0x1d021000 0x4000>;
> +
> + clocks {
> + #address-cells = <0>;
> + #size-cells = <0>;
> +
> + uclk40xi: uclk40xi {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <40000000>;
> + };

Any fixed clocks from oscillators on the board should be at the top
level and defined as inputs to the clock controller node with a
'clocks' property.

> +
> + aumclki: aumclki {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <20000000>;
> + };
> +
> + rtc32k: rtc32k {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <32768>;
> + };
> +
> + pxrefclk: pxrefclk {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <100000000>;
> + };
> +
> + pcisuppclk: pcisuppclk {
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&uclk40xi>;
> + clock-div = <20>;
> + clock-mult = <1>;
> + };

Please look at any recent example of clock bindings. We don't try to
describe every divider, mux, gate, etc. in DT, but just clock
controller blocks with all the output clocks enumerated in clock
cells.

> +
> + usb2_clk: usb2_clk {
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&uclk40xi>;
> + clock-div = <2>;
> + clock-mult = <1>;
> + };
> +
> + pll1: pll1 {
> + compatible =
> + "socionext,milbeaut-m10v-pll-fixed-factor";
> + #clock-cells = <0>;
> + clocks = <&uclk40xi>;
> + offset = <1>;
> + clock-div = <1>;
> + clock-mult = <40>;
> + };
> +
> + pll2: pll2 {
> + compatible =
> + "socionext,milbeaut-m10v-pll-fixed-factor";
> + #clock-cells = <0>;
> + clocks = <&uclk40xi>;
> + offset = <2>;
> + clock-div = <1>;
> + clock-mult = <30>;
> + };
> +
> + pll6: pll6 { /* CLK 6-1 */
> + compatible =
> + "socionext,milbeaut-m10v-pll-fixed-factor";
> + #clock-cells = <0>;
> + clocks = <&uclk40xi>;
> + offset = <7>;
> + clock-div = <1>;
> + clock-mult = <35>;
> + };
> +
> + pll7: pll7 { /* CLK 7-1 */
> + compatible =
> + "socionext,milbeaut-m10v-pll-fixed-factor";
> + #clock-cells = <0>;
> + clocks = <&uclk40xi>;
> + offset = <8>;
> + clock-div = <1>;
> + clock-mult = <40>;
> + };
> +
> + pll9: pll9 { /* CA7CLK, ATCLK */
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&uclk40xi>;
> + clock-div = <1>;
> + clock-mult = <33>;
> + };
> +
> + pll10: pll10 {
> + compatible =
> + "socionext,milbeaut-m10v-pll-fixed-factor";
> + #clock-cells = <0>;
> + clocks = <&uclk40xi>;
> + offset = <10>;
> + clock-div = <5>;
> + clock-mult = <108>;
> + };
> +
> + pll11: pll11 { /* CLK 11-1 */
> + compatible =
> + "socionext,milbeaut-m10v-pll-fixed-factor";
> + #clock-cells = <0>;
> + clocks = <&uclk40xi>;
> + offset = <12>;
> + clock-div = <2>;
> + clock-mult = <75>;
> + };
> +
> + emmcclk: emmcclk {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll11>;
> + offset = <28>; /* EMMCCLK */
> + mask = <0x3>;
> + ratios = <15 0x7 10 0x6 9 0x5 8 0x4>;
> + };
> +
> + pll1_div_1_2: pll1_div_1_2 { /* CLK 1-2 */
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&pll1>;
> + clock-div = <2>;
> + clock-mult = <1>;
> + };
> +
> + pll2_div_1_2: pll2_div_1_2 { /* CLK 2-2 */
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&pll2>;
> + clock-div = <2>;
> + clock-mult = <1>;
> + };
> +
> + pll6_div_1_2: pll6_div_1_2 { /* CLK 6-2 */
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&pll6>;
> + clock-div = <2>;
> + clock-mult = <1>;
> + };
> +
> + pll6_div_1_3: pll6_div_1_3 { /* CLK 6-3 */
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&pll6>;
> + clock-div = <3>;
> + clock-mult = <1>;
> + };
> +
> + pll7_div_1_2: pll7_div_1_2 { /* CLK 7-2 */
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&pll7>;
> + clock-div = <2>;
> + clock-mult = <1>;
> + };
> +
> + pll7_div_1_5: pll7_div_1_5 { /* CLK 7-5 */
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&pll7>;
> + clock-div = <5>;
> + clock-mult = <1>;
> + };
> +
> + pll10_div_1_2: pll10_div_1_2 { /* CLK 10-2 */
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&pll10>;
> + clock-div = <2>;
> + clock-mult = <1>;
> + };
> +
> + spiclk_mux_0: spiclk_mux_0 {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll10_div_1_2>;
> + offset = <227>; /* SPICLK */
> + mask = <0x3>;
> + ratios = <4 0x5 2 0x4>;
> + };
> +
> + spiclk_mux_1: spiclk_mux_1 {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll7_div_1_2>;
> + offset = <227>; /* SPICLK */
> + mask = <0x3>;
> + ratios = <8 0x6>;
> + };
> +
> + spiclk: spiclk {
> + compatible = "socionext,milbeaut-m10v-clk-mux";
> + #clock-cells = <0>;
> + clocks = <&spiclk_mux_0>, <&spiclk_mux_1>;
> + };
> +
> + ca7wdclk: ca7wdclk {
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&pll2_div_1_2>;
> + clock-div = <12>;
> + clock-mult = <1>;
> + };
> +
> + pll9_div_1_2: pll9_div_1_2 {
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&pll9>;
> + clock-div = <2>;
> + clock-mult = <1>;
> + };
> +
> + mclk400: mclk400 {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll1_div_1_2>;
> + offset = <295>; /* MCLK400 */
> + mask = <0x3>;
> + ratios = <4 0x7 2 0x5>;
> + };
> +
> + mclk200: mclk200 {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll1_div_1_2>;
> + offset = <291>; /* MCLK200 */
> + mask = <0x7>;
> + ratios = <8 0xf 4 0xb>;
> + };
> +
> + aclk400: aclk400 {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll1_div_1_2>;
> + offset = <288>; /* ACLK400 */
> + mask = <0x3>;
> + ratios = <4 0x7 2 0x5>;
> + };
> +
> + aclk300: aclk300 {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll2_div_1_2>;
> + offset = <352>; /* ACLK300 */
> + mask = <0x1>;
> + ratios = <6 0x3 4 0x2>;
> + };
> +
> + aclk: aclk {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll1_div_1_2>;
> + offset = <276>; /* ACLK */
> + mask = <0x7>;
> + ratios = <8 0xf 4 0xb>;
> + };
> +
> + aclkexs: aclkexs {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll1_div_1_2>;
> + offset = <272>; /* ACLKEXS */
> + mask = <0x7>;
> + ratios = <8 0xf 6 0xd 5 0xc 4 0xb>;
> + };
> +
> + hclk: hclk {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll1_div_1_2>;
> + offset = <263>; /* HCLK */
> + mask = <0xf>;
> + ratios = <16 0x1f 8 0x17>;
> + };
> +
> + hclkbmh: hclkbmh {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll1_div_1_2>;
> + offset = <268>; /* HCLKBMH */
> + mask = <0x7>;
> + ratios = <8 0xf 4 0xb>;
> + };
> +
> + pclk: pclk {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll1_div_1_2>;
> + offset = <256>; /* PCLK */
> + mask = <0x3f>;
> + ratios = <32 0x5f 16 0x4f>;
> + };
> +
> + pclkca7wd: pclkca7wd {
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&pll1_div_1_2>;
> + clock-div = <16>;
> + clock-mult = <1>;
> + };
> +
> + rclk: rclk {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll10_div_1_2>;
> + offset = <0>; /* RCLK */
> + mask = <0x3>;
> + ratios = <64 0x7 48 0x6 32 0x5 16 0x4>;
> + };
> +
> + uhs1clk0: uhs1clk0 {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll7>;
> + offset = <3>; /* UHS1CLK0 */
> + mask = <0xf>;
> + ratios = <16 0x14 8 0x13 4 0x12 3 0x11 2 0x10>;
> + };
> +
> + uhs1clk1_div1: uhs1clk1_div1 {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll7>;
> + offset = <8>; /* UHS1CLK1 */
> + mask = <0xf>;
> + ratios = <16 0x14 8 0x13>;
> + };
> +
> + uhs1clk1_div2: uhs1clk1_div2 {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll6_div_1_2>;
> + offset = <8>; /* UHS1CLK1 */
> + mask = <0xf>;
> + ratios = <1 0x18>;
> + };
> +
> + uhs1clk1: uhs1clk1 {
> + compatible = "socionext,milbeaut-m10v-clk-mux";
> + #clock-cells = <0>;
> + clocks = <&uhs1clk1_div1>, <&uhs1clk1_div2>;
> + };
> +
> + uhs1clk2_div1: uhs1clk2_div1 {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll7>;
> + offset = <13>; /* UHS1CLK2 */
> + mask = <0xf>;
> + ratios = <16 0x14 8 0x13 4 0x12>;
> + };
> +
> + uhs1clk2_div2: uhs1clk2_div2 {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll6_div_1_2>;
> + offset = <13>; /* UHS1CLK2 */
> + mask = <0xf>;
> + ratios = <1 0x18>;
> + };
> +
> + uhs1clk2: uhs1clk2 {
> + compatible = "socionext,milbeaut-m10v-clk-mux";
> + #clock-cells = <0>;
> + clocks = <&uhs1clk2_div1>, <&uhs1clk2_div2>;
> + };
> +
> + uhs2clk: uhs2clk {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll6_div_1_3>;
> + offset = <18>; /* UHS2CLK */
> + mask = <0x7>;
> + ratios = <18 0xf 16 0xe 14 0xd 13 0xc
> + 12 0xb 11 0xa 10 0x9 9 0x8>;
> + };
> +
> + nfclk_div1: nfclk_div1 {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll7_div_1_2>;
> + offset = <22>; /* NFCLK */
> + mask = <0x1f>;
> + ratios = <40 0x24 16 0x23 13 0x22 10 0x21
> + 8 0x20>;
> + };
> +
> + nfclk_div2: nfclk_div2 {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll7_div_1_5>;
> + offset = <22>; /* NFCLK */
> + mask = <0x1f>;
> + ratios = <10 0x28>;
> + };
> +
> + nfclk: nfclk {
> + compatible = "socionext,milbeaut-m10v-clk-mux";
> + #clock-cells = <0>;
> + clocks = <&nfclk_div1>, <&nfclk_div2>;
> + };
> +
> + clk5: clk5 {
> + compatible = "socionext,milbeaut-m10v-clk-div";
> + #clock-cells = <0>;
> + clocks = <&pll10_div_1_2>;
> + offset = <239>; /* NETAUSEL */
> + mask = <0x3>;
> + ratios = <64 0x7 48 0x6 32 0x5 16 0x4>;
> + };
> + };
> + };
> +
> + peri-timer@1e000000 { /* 32-bit Reload Timers */

timer@1e000050

This and all memory mapped peripherals go under simple-bus nodes(s).

> + compatible = "socionext,milbeaut-m10v-timer";
> + reg = <0x1e000050 0x10>, <0x1e000060 0x10>;
> + interrupts = <0 91 4>;
> + clocks = <&rclk>;
> + };
> +
> + timer { /* The Generic Timer */
> + compatible = "arm,armv7-timer";
> + interrupts = <GIC_PPI 13
> + (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
> + <GIC_PPI 14
> + (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
> + <GIC_PPI 11
> + (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
> + <GIC_PPI 10
> + (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
> + clock-frequency = <40000000>;//40M
> + always-on;
> + arm,cpu-registers-not-fw-configured;

This was a work-around for some existing platforms. New platforms
should fix the firmware/bootloader.

> + };
> +
> + dummy_clk: dummy_clk {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <50000000>;
> + };
> +
> + pinctrl: pinctrl@1d022000 {
> + compatible = "socionext,milbeaut-m10v-pinctrl";
> + reg = <0x1d022000 0x1000>,
> + <0x1c26f000 0x1000>;
> + reg-names = "pinctrl", "exiu";
> + gpio-controller;
> + #gpio-cells = <2>;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + clocks = <&dummy_clk>;

Please use a real clock or make clocks optional.

> + interrupts = <0 54 4>, <0 55 4>, <0 56 4>, <0 57 4>,
> + <0 58 4>, <0 59 4>, <0 60 4>, <0 61 4>,
> + <0 62 4>, <0 63 4>, <0 64 4>, <0 65 4>,
> + <0 66 4>, <0 67 4>, <0 68 4>, <0 69 4>;
> + interrupt-names = "pin-48", "pin-49", "pin-50", "pin-51",
> + "pin-52", "pin-53", "pin-54", "pin-55",
> + "pin-56", "pin-57", "pin-58", "pin-59",
> + "pin-60", "pin-61", "pin-62", "pin-63";
> +
> + usio1_pins: usio1_pins {
> + pins = "PE4", "PE5", "P87";
> + function = "usio1";
> + };
> + };
> +
> + usio1: usio_uart@1e700010 { /* PE4, PE5 */

serial@...

> + /* Enable this as ttyUSI0 */
> + index = <0>;

Drop this. aliases node is the right way to do this.

> + compatible = "socionext,milbeaut-m10v-usio-uart";
> + reg = <0x1e700010 0x10>;
> + interrupts = <0 141 0x4>, <0 149 0x4>;
> + interrupt-names = "rx", "tx";
> + clocks = <&hclk>;
> + };
> +};
> --
> 1.9.1
>

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