RE: [PATCH v2 12/13] arm64: dts: renesas: Add initial DTSI for RZ/V2M SoC

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Hi Geert,

On 26 April 2022 19:13 Geert Uytterhoeven wrote:
> On Wed, Mar 30, 2022 at 5:42 PM Phil Edworthy wrote:
> > Details of the SoC can be found here:
> > https://www.renesas.com/us/en/products/microcontrollers-
> microprocessors/rz-cortex-a-mpus/rzv2m-dual-cortex-a53-lpddr4x32bit-ai-
> accelerator-isp-4k-video-codec-4k-camera-input-fhd-display-output
> >
> > Signed-off-by: Phil Edworthy <phil.edworthy@xxxxxxxxxxx>
> > Reviewed-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> 
> Thanks for your patch!
> 
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/renesas/r9a09g011.dtsi
> > @@ -0,0 +1,99 @@
> > +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +/*
> > + * Device Tree Source for the RZ/V2M SoC
> > + *
> > + * Copyright (C) 2022 Renesas Electronics Corp.
> > + */
> > +
> > +#include <dt-bindings/interrupt-controller/arm-gic.h>
> > +#include <dt-bindings/clock/r9a09g011-cpg.h>
> > +
> > +/ {
> > +       compatible = "renesas,r9a09g011";
> > +       #address-cells = <2>;
> > +       #size-cells = <2>;
> > +
> > +       /* clock can be either from exclk or crystal oscillator
> (XIN/XOUT) */
> > +       extal_clk: extal {
> > +               compatible = "fixed-clock";
> > +               #clock-cells = <0>;
> > +               /* This value must be overridden by the board */
> > +               clock-frequency = <0>;
> > +       };
> > +
> > +       cpus {
> > +               #address-cells = <1>;
> > +               #size-cells = <0>;
> > +
> > +               cpu-map {
> > +                       cluster0 {
> > +                               core0 {
> > +                                       cpu = <&cpu0>;
> > +                               };
> > +                       };
> > +               };
> > +
> > +               cpu0: cpu@0 {
> > +                       compatible = "arm,cortex-a53";
> > +                       reg = <0>;
> > +                       device_type = "cpu";
> > +                       clocks = <&cpg CPG_CORE R9A09G011_CA53_CLK>;
> 
> CPG_MOD?
Ok

> > +               };
> > +       };
> > +
> > +       soc: soc {
> > +               compatible = "simple-bus";
> > +               interrupt-parent = <&gic>;
> > +               #address-cells = <2>;
> > +               #size-cells = <2>;
> > +               ranges;
> > +
> > +               gic: interrupt-controller@82000000 {
> > +                       compatible = "arm,gic-400";
> > +                       #interrupt-cells = <3>;
> > +                       #address-cells = <0>;
> > +                       interrupt-controller;
> > +                       reg = <0x0 0x82010000 0 0x1000>,
> > +                             <0x0 0x82020000 0 0x20000>,
> > +                             <0x0 0x82040000 0 0x20000>,
> > +                             <0x0 0x82060000 0 0x20000>;
> > +                       interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(1)
> | IRQ_TYPE_LEVEL_HIGH)>;
> 
> clocks = <&cpg CPG_MOD R9A09G011_GIC_CLK>;
> clock-names = "clk";
Yes

> > +               };
> > +
> > +               cpg: clock-controller@a3500000 {
> > +                       compatible = "renesas,r9a09g011-cpg";
> > +                       reg = <0 0xa3500000 0 0x10000>;
> 
> Size should be 0x1000, according to the address map.
Yes

> > +                       clocks = <&extal_clk>;
> > +                       clock-names = "extal";
> > +                       #clock-cells = <2>;
> > +                       #reset-cells = <1>;
> > +                       #power-domain-cells = <0>;
> > +               };
> > +
> > +               sys: system-configuration@a3f03000 {
> > +                       compatible = "renesas,r9a09g011-sys";
> 
> system-controller@a3f03000?
> 
> Pending acceptance of the DT bindings.
I'll remove this node for the time being.

> > +                       reg = <0 0xa3f03000 0 0x400>;
> > +                       status = "disabled";
> 
> I think there is no need to keep this disabled.
> 
> > +               };
> > +
> > +               uart0: serial@a4040000 {
> > +                       compatible = "renesas,r9a09g011-uart",
> "renesas,em-uart";
> > +                       reg = <0 0xa4040000 0 0x38>;
> 
> Register offsets are documented until and including 0x7c,
> so size should be 0x80 (which matches the address map).
Yes

> > +                       interrupts = <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>;
> > +                       clocks = <&cpg CPG_MOD R9A09G011_URT0_CLK>;
> > +                       clock-names = "sclk";
> > +                       status = "disabled";
> > +               };
> > +       };
> > +
> > +       timer {
> > +               compatible = "arm,armv8-timer";
> > +               interrupts-extended = <&gic GIC_PPI 13
> (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>,
> > +                                     <&gic GIC_PPI 14
> (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>,
> > +                                     <&gic GIC_PPI 11
> (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>,
> > +                                     <&gic GIC_PPI 10
> (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>;
> > +               clocks = <&cpg CPG_MOD R9A09G011_SYC_CNT_CLK>;
> > +               clock-names = "clk";
> > +               resets = <&cpg R9A09G011_SYC_RST_N>;
> 
> The three properties above are not document, causing the following
> "make dtbs_check" error message:
> 
> arch/arm64/boot/dts/renesas/r9a09g011-v2mevk2.dtb: timer:
> 'clock-names', 'clocks', 'resets' do not match any of the regexes:
> 'pinctrl-[0-9]+'
>         From schema:
> Documentation/devicetree/bindings/timer/arm,arch_timer.yaml
Right.
I assume the correct action is to update the bindings, right?
Of course, not much will work without this clock enabled ;)

Btw, do you know of a way to run "make dtbs_check" for a single dtb?

> > +       };
> > +};

Thanks
Phil




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