Re: [PATCH v2 18/20] arm64: dts: nuvoton: Add initial NPCM8XX device tree

Krzysztof Kozlowski
2022-06-08T10:30:49Z

On 08/06/2022 11:56, Tomer Maimon wrote:
> This adds initial device tree support for the
> Nuvoton NPCM845 Board Management controller (BMC) SoC family.
>
> The NPCM845 based quad-core Cortex-A35 ARMv8 architecture and
> have various peripheral IPs.
>
> Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
> ---
> arch/arm64/boot/dts/Makefile | 1 +
> .../dts/nuvoton/nuvoton-common-npcm8xx.dtsi | 197 ++++++++++++++++++
> .../boot/dts/nuvoton/nuvoton-npcm845.dtsi | 76 +++++++
> 3 files changed, 274 insertions(+)
> create mode 100644 arch/arm64/boot/dts/nuvoton/nuvoton-common-npcm8xx.dtsi
> create mode 100644 arch/arm64/boot/dts/nuvoton/nuvoton-npcm845.dtsi
>
> diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile
> index 1ba04e31a438..7b107fa7414b 100644
> --- a/arch/arm64/boot/dts/Makefile
> +++ b/arch/arm64/boot/dts/Makefile
> @@ -19,6 +19,7 @@ subdir-y += lg
> subdir-y += marvell
> subdir-y += mediatek
> subdir-y += microchip
> +subdir-y += nuvoton
> subdir-y += nvidia
> subdir-y += qcom
> subdir-y += realtek
> diff --git a/arch/arm64/boot/dts/nuvoton/nuvoton-common-npcm8xx.dtsi b/arch/arm64/boot/dts/nuvoton/nuvoton-common-npcm8xx.dtsi
> new file mode 100644
> index 000000000000..97e108c50760
> --- /dev/null
> +++ b/arch/arm64/boot/dts/nuvoton/nuvoton-common-npcm8xx.dtsi
> @@ -0,0 +1,197 @@
> +// SPDX-License-Identifier: GPL-2.0
> +// Copyright (c) 2021 Nuvoton Technology tomer.maimon@nuvoton.com
> +
> +#include <dt-bindings/clock/nuvoton,npcm8xx-clock.h>
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +
> +/ {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + interrupt-parent = <&gic>;
> +
> + /* external reference clock */
> + clk_refclk: clk-refclk {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <25000000>;

Ignored comment.

> + clock-output-names = "refclk";
> + };
> +
> + /* external reference clock for cpu. float in normal operation */
> + clk_sysbypck: clk-sysbypck {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <1000000000>;

Ignored comment.

> + clock-output-names = "sysbypck";
> + };
> +
> + /* external reference clock for MC. float in normal operation */
> + clk_mcbypck: clk-mcbypck {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <1050000000>;
> + clock-output-names = "mcbypck";
> + };
> +
> + soc {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + compatible = "simple-bus";
> + interrupt-parent = <&gic>;
> + ranges;
> +
> + gcr: gcr@f0800000 {

Ignored comment.

> + compatible = "nuvoton,npcm845-gcr", "syscon",
> + "simple-mfd";

This is not a simple-mfd... I see original bindings defined it that way,
but why? I think they should be corrected - remove simple-mfd from the
bindings and DTS.

> + reg = <0x0 0xf0800000 0x0 0x1000>;
> + };
> +
> + gic: interrupt-controller@dfff9000 {
> + compatible = "arm,gic-400";
> + reg = <0x0 0xdfff9000 0x0 0x1000>,
> + <0x0 0xdfffa000 0x0 0x2000>,
> + <0x0 0xdfffc000 0x0 0x2000>,
> + <0x0 0xdfffe000 0x0 0x2000>;
> + interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
> + #interrupt-cells = <3>;
> + interrupt-controller;
> + #address-cells = <0>;
> + ppi-partitions {
> + ppi_cluster0: interrupt-partition-0 {
> + affinity = <&cpu0 &cpu1 &cpu2 &cpu3>;
> + };
> + };
> + };
> + };
> +
> + ahb {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + compatible = "simple-bus";
> + interrupt-parent = <&gic>;
> + ranges;
> +
> + rstc: rstc@f0801000 {

Ignored comment.

Four comments from v1 ignored in this patch alone.

I'll stop reviewing, it is a waste of my time.

NAK for this change.

Best regards,
Krzysztof