Re: [PATCH] arm64:?==?utf-8?q? dts: rockchip: add rock-pi-4 analog audio
Adrian Ratiu
adrian.ratiu at collabora.com
Tue Jun 29 10:30:49 PDT 2021
On Tuesday, June 29, 2021 20:04 EEST, Alex Bee <knaerzche at gmail.com> wrote:
> Hi Adrian, Hi Robin
> Am 29.06.21 um 17:42 schrieb Robin Murphy:
> > On 2021-06-29 16:07, Adrian Ratiu wrote:
> >> Hi Alex,
> >>
> >> On Tue, 29 Jun 2021, Alex Bee <knaerzche at gmail.com> wrote:
> >>> Hi Adrian,
> >>> I've submitted similar patch already. Its part of [1]
> >>
> >> Thank you for pointing out your patch, I was not aware of it as it was
> >> not merged yet (I tested latest linux-next).
> >>
> >> It is a good sign that our code is almost identical except for the
> >> headphone detect pin which you mention.
> >>
> >>>
> >>> There is no headphone detection pin in the schematics, btw.
> >>
> >> There are two reasons I added it:
> >>
> >> 1. The es8316 codec failed to probe() in my testing unless the irq was
> >> defined. That might have been due to me testing the codec directly
> >> with the simple card driver instead of the graph driver.
> >>
> >> Point 1 doesn't appear to be an issue anymore, the codec + graph
> >> driver probe correctly and audio supposedly (see below) works even
> >> without the irq.
> I guess that just a "warning" that doesn't mean the driver failed to
> probe. (It the same for RockPro64, for example - where the interrupt
> line isn't connected as well)
> >>
> >> 2. I got the gpio bank 1 pin 0 location from various headphone
> >> detection commits in the vendor v4.4 kernel, like for example [1].
> >>
> >> Are you 100% sure there is no hp detection pin wired on the rock-pi-4?
> >> Even if it might be missing from the schematics, the vendor driver
> >> code apparently defines and uses it?
> >
> > FWIW according to the schematics it *is* wired up on the Model C board,
> > but not on the Model A or B.
> >
> Thanks for the pointer, I did look at v1.3 only, tbh.
>
> I'm not sure I understand why we should pull up this pin.
>
> Shouldn't we better use hp-det-gpio property of audio-graph-card to make
> real use of this pin?
That sounds like the best way forward, only on the model / revision which actually has the pin connected.
>
> > Robin.
> >
> >> From booting with the irq defined I get the following in
> >> /proc/interrupts however I'm having an unrelated difficulty testing
> >> because the audio connector literally broke off the board like in [2].
> >> 90: 1 0 0 0 0 rockchip_gpio_irq 0 Level es8316
> According to the Model C schematics the codec interrupt (HP_INT) is
> connected to GPIO1_PA1 (in contrast to GPIO1_PA0 which is used for hp
> detection).
>
> If you're OK I'll update my series and add those pins for Model C only
> (and will request the schematics of A+ and B+ which seem not to be
> published yet to check out what the manufacturer decided for those variants)
Yes, thank you very much! Please CC me on the new series, hopefully I can provide a tested-by if I receive the fixed HW by then.
Adrian
>
> Alex
> >>
> >> Team Radxa was very nice in offering me a replacement but until that
> >> arrives I can't test this anymore.
> >>
> >> [1]
> >> https://github.com/radxa/kernel/commit/e945cad5c3ec82d171760465d3c7a84bb10ed1b7
> >>
> >>
> >> [2] https://forum.radxa.com/t/audio-jack-broke-off/935
> >>
> >>> [1]
> >>> https://patchwork.kernel.org/project/linux-rockchip/cover/20210618181256.27992-1-knaerzche@gmail.com/
> >>>
> >>>
> >>> Best,
> >>>
> >>> Alex
> >>>
> >>> Am 28.06.21 um 13:30 schrieb Adrian Ratiu:
> >>>> This adds the necessary pinctrl and nodes to enable the
> >>>> analog audio on rk3399 rock-pi-4 SBCs using the es8316
> >>>> codec and the audio-graph-card driver.
> >>>>
> >>>> Signed-off-by: Adrian Ratiu <adrian.ratiu at collabora.com>
> >>>> ---
> >>>> .../boot/dts/rockchip/rk3399-rock-pi-4.dtsi | 38
> >>>> +++++++++++++++++++
> >>>> 1 file changed, 38 insertions(+)
> >>>>
> >>>> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
> >>>> b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
> >>>> index b28888ea9262..77781d9150ac 100644
> >>>> --- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
> >>>> +++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
> >>>> @@ -128,6 +128,12 @@ vdd_log: vdd-log {
> >>>> regulator-max-microvolt = <1400000>;
> >>>> vin-supply = <&vcc5v0_sys>;
> >>>> };
> >>>> +
> >>>> + sound {
> >>>> + compatible = "audio-graph-card";
> >>>> + label = "rockchip,rk3399";
> >>>> + dais = <&i2s0_p0>;
> >>>> + };
> >>>> };
> >>>> &cpu_l0 {
> >>>> @@ -422,6 +428,24 @@ &i2c1 {
> >>>> i2c-scl-rising-time-ns = <300>;
> >>>> i2c-scl-falling-time-ns = <15>;
> >>>> status = "okay";
> >>>> +
> >>>> + es8316: codec at 11 {
> >>>> + compatible = "everest,es8316";
> >>>> + reg = <0x11>;
> >>>> + clocks = <&cru SCLK_I2S_8CH_OUT>;
> >>>> + clock-names = "mclk";
> >>>> + pinctrl-names = "default";
> >>>> + pinctrl-0 = <&hp_det_pin>;
> >>>> + interrupt-parent = <&gpio1>;
> >>>> + interrupts = <RK_PA0 IRQ_TYPE_LEVEL_HIGH>;
> >>>> + #sound-dai-cells = <0>;
> >>>> +
> >>>> + port {
> >>>> + es8316_p0_0: endpoint {
> >>>> + remote-endpoint = <&i2s0_p0_0>;
> >>>> + };
> >>>> + };
> >>>> + };
> >>>> };
> >>>> &i2c3 {
> >>>> @@ -441,6 +465,14 @@ &i2s0 {
> >>>> rockchip,capture-channels = <2>;
> >>>> rockchip,playback-channels = <2>;
> >>>> status = "okay";
> >>>> +
> >>>> + i2s0_p0: port {
> >>>> + i2s0_p0_0: endpoint {
> >>>> + dai-format = "i2s";
> >>>> + mclk-fs = <256>;
> >>>> + remote-endpoint = <&es8316_p0_0>;
> >>>> + };
> >>>> + };
> >>>> };
> >>>> &i2s1 {
> >>>> @@ -556,6 +588,12 @@ wifi_host_wake_l: wifi-host-wake-l {
> >>>> rockchip,pins = <0 RK_PA3 RK_FUNC_GPIO &pcfg_pull_none>;
> >>>> };
> >>>> };
> >>>> +
> >>>> + es8316 {
> >>>> + hp_det_pin: hp-det-pin {
> >>>> + rockchip,pins = <1 RK_PA0 RK_FUNC_GPIO &pcfg_pull_up>;
> >>>> + };
> >>>> + };
> >>>> };
> >>>> &pwm2 {
> >>
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> >
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