Re: [PATCH v4 6/6] arm64: dts: amlogic: Add Amlogic S4 Audio

[Jiebing Chen <jiebing.chen@amlogic.com>]

在 2025/3/19 16:26, Krzysztof Kozlowski 写道:
> [You don't often get email from krzk@kernel.org. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
>
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>
> On Wed, Mar 19, 2025 at 03:04:49PM +0800, jiebing chen wrote:
>> Add basic audio driver support for the Amlogic S4 based
>> Amlogic AQ222 board. use hifipll pll (1179648000) to
>> support 768k sample rate and 24 bit (s24_le), 24bit sclk
>> is 48fs, use mpll0 (270950400) to support 705.6k sample
>> rate and 32bit, use mpll1 (338688000) to support 705.6k
>> and 24bit.
> Please wrap commit message according to Linux coding style / submission
> process (neither too early nor over the limit):
> https://elixir.bootlin.com/linux/v6.4-rc1/source/Documentation/process/submitting-patches.rst#L597
ok, thanaks
>> Signed-off-by: jiebing chen <jiebing.chen@amlogic.com>
> ...
>
>> +
>> +             dai-link-12 {
>> +                     sound-dai = <&toacodec TOACODEC_OUT>;
>> +
>> +                     codec {
>> +                             sound-dai = <&acodec>;
>> +                     };
>> +             };
>> +     };
>> +
> Do not add stray blank lines.
>
>>   };
>>
>>   &pwm_ef {
>> diff --git a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
>> index 957577d986c0675a503115e1ccbc4387c2051620..83edafc2646438e3e6b1945fa1c4b327254a4131 100644
>> --- a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
>> +++ b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
>> @@ -11,7 +11,11 @@
>>   #include <dt-bindings/clock/amlogic,s4-peripherals-clkc.h>
>>   #include <dt-bindings/power/meson-s4-power.h>
>>   #include <dt-bindings/reset/amlogic,meson-s4-reset.h>
>> -
> Why?

The following files are included that the audio driver depends on

it is same as sm1 chip

>> +#include <dt-bindings/clock/axg-audio-clkc.h>
>> +#include <dt-bindings/reset/amlogic,meson-axg-audio-arb.h>
>> +#include <dt-bindings/reset/amlogic,meson-g12a-audio-reset.h>
>> +#include <dt-bindings/sound/meson-g12a-toacodec.h>
>> +#include <dt-bindings/sound/meson-g12a-tohdmitx.h>
> Old style was correct.

I didn't understand where you were referring to, I'm guessing that's 
what it was about

the following changes to tdmif_a

old:

clock-names = "mclk", "sclk", "lrclk";

new:
clock-names = "sclk", "lrclk","mclk";
it fix warning

it showhttp://devicetree.org/schemas/sound/amlogic,axg-tdm-iface.yaml#
examples:
   - |
     #include <dt-bindings/clock/axg-audio-clkc.h>

     audio-controller {
         compatible = "amlogic,axg-tdm-iface";
         #sound-dai-cells = <0>;
         clocks = <&clkc_audio AUD_CLKID_MST_A_SCLK>,
                  <&clkc_audio AUD_CLKID_MST_A_LRCLK>,
                  <&clkc_audio AUD_CLKID_MST_A_MCLK>;
         clock-names = "sclk", "lrclk", "mclk";
     };

>
>>   / {
>>        cpus {
>>                #address-cells = <2>;
>> @@ -46,6 +50,36 @@ cpu3: cpu@3 {
>>                };
>>        };
>>
>> +     tdmif_a: audio-controller-0 {
>> +             compatible = "amlogic,axg-tdm-iface";
>> +             #sound-dai-cells = <0>;
>> +             sound-name-prefix = "TDM_A";
>> +             clocks = <&clkc_audio AUD_CLKID_MST_A_SCLK>,
>> +                      <&clkc_audio AUD_CLKID_MST_A_LRCLK>,
>> +                      <&clkc_audio AUD_CLKID_MST_A_MCLK>;
>> +             clock-names = "sclk", "lrclk","mclk";
>> +     };
>> +
>> +     tdmif_b: audio-controller-1 {
>> +             compatible = "amlogic,axg-tdm-iface";
>> +             #sound-dai-cells = <0>;
>> +             sound-name-prefix = "TDM_B";
>> +             clocks = <&clkc_audio AUD_CLKID_MST_A_SCLK>,
>> +                      <&clkc_audio AUD_CLKID_MST_B_LRCLK>,
>> +                      <&clkc_audio AUD_CLKID_MST_B_MCLK>;
>> +             clock-names = "sclk", "lrclk","mclk";
>> +     };
>> +
>> +     tdmif_c: audio-controller-2 {
>> +             compatible = "amlogic,axg-tdm-iface";
>> +             #sound-dai-cells = <0>;
>> +             sound-name-prefix = "TDM_C";
>> +             clocks = <&clkc_audio AUD_CLKID_MST_C_SCLK>,
>> +                      <&clkc_audio AUD_CLKID_MST_C_LRCLK>,
>> +                      <&clkc_audio AUD_CLKID_MST_C_MCLK>;
>> +             clock-names = "sclk", "lrclk","mclk";
>> +     };
>> +
>>        timer {
>>                compatible = "arm,armv8-timer";
>>                interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
>> @@ -101,7 +135,6 @@ apb4: bus@fe000000 {
>>                        #address-cells = <2>;
>>                        #size-cells = <2>;
>>                        ranges = <0x0 0x0 0x0 0xfe000000 0x0 0x480000>;
>> -
> Why? What is happening in this patch - why are you changing so many
> other pieces?
>
>>                        clkc_periphs: clock-controller@0 {
>>                                compatible = "amlogic,s4-peripherals-clkc";
>>                                reg = <0x0 0x0 0x0 0x49c>;
>> @@ -134,6 +167,17 @@ clkc_pll: clock-controller@8000 {
>>                                #clock-cells = <1>;
>>                        };
>>
>> +                     acodec: audio-controller@1a000 {
>> +                             compatible = "amlogic,t9015";
>> +                             reg = <0x0 0x1A000 0x0 0x14>;
>> +                             #sound-dai-cells = <0>;
>> +                             sound-name-prefix = "ACODEC";
>> +                             clocks = <&clkc_periphs CLKID_ACODEC>;
>> +                             clock-names = "pclk";
>> +                             resets = <&reset RESET_ACODEC>;
>> +                             AVDD-supply = <&vddio_ao1v8>;
>> +                     };
>> +
>>                        watchdog@2100 {
>>                                compatible = "amlogic,s4-wdt", "amlogic,t7-wdt";
>>                                reg = <0x0 0x2100 0x0 0x10>;
>> @@ -850,3 +894,327 @@ emmc: mmc@fe08c000 {
>>                };
>>        };
>>   };
>> +
>> +&apb4 {
>> +     audio: bus@330000 {
>> +             compatible = "simple-bus";
>> +             reg = <0x0 0x330000 0x0 0x1000>;
> That's not a simple bus in such case.

these code base on old dts like sm1/g12a, we didn't easily change any of 
the relevant properties

To be consistent with the previous one

>
> NAK
>
>
> Best regards,
> Krzysztof
>

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