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Message-ID: <fd19ca3c-e815-499e-0c46-0a4e2684b6b9@ideasonboard.com>
Date: Thu, 18 Jun 2020 17:32:55 +0100
From: Kieran Bingham <kieran.bingham@...asonboard.com>
To: Alex Riesen <alexander.riesen@...itec.com>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Hans Verkuil <hverkuil-cisco@...all.nl>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
devel@...verdev.osuosl.org, linux-media@...r.kernel.org,
linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
linux-renesas-soc@...r.kernel.org
Subject: Re: [PATCH v5 9/9] arm64: dts: renesas: salvator: add a connection
from adv748x codec (HDMI input) to the R-Car SoC
Hi Alex,
On 02/04/2020 19:35, Alex Riesen wrote:
> As all known variants of the Salvator board have the HDMI decoder
> chip (the ADV7482) connected to the SSI4 on R-Car SoC, the ADV7482
> endpoint and the connection definitions are placed in the common board
> file.
>
> For the same reason, the CLK_C clock line and I2C configuration (similar
> to the ak4613, on the same interface) are added into the common file.
>
> Signed-off-by: Alexander Riesen <alexander.riesen@...itec.com>
>
> --
>
> v5: Add dummy ssi4 node to the rcar sound card in r8a77961, as the
> devices (Salvator-X 2nd version with R-Car M3 W+) also reference
> salvator-common.dtsi.
> Suggested-by: Geert Uytterhoeven <geert@...ux-m68k.org>
>
> v2: Also add ssi4_ctrl pin group in the sound pins. The pins are
> responsible for SCK4 (sample clock) WS4 and (word boundary input),
> and are required for SSI audio input over I2S.
>
> The adv748x shall provide its own implementation of the output clock
> (MCLK), connected to the audio_clk_c line of the R-Car SoC.
>
> If the frequency of the ADV748x MCLK were fixed, the clock
> implementation were not necessary, but it does not seem so: the MCLK
> depends on the value in a speed multiplier register and the input sample
> rate (48kHz).
>
> Remove audio clock C from the clocks of adv7482.
>
> The clocks property of the video-receiver node lists the input
> clocks of the device, which is quite the opposite from the
> original intention: the adv7482 on Salvator X boards is a
> provide of the MCLK clock for I2S audio output.
>
> Remove old definition of &sound_card.dais and reduce size of changes
> in the Salvator-X specific device tree source.
>
> Declare video-receiver a clock producer, as the adv748x driver
> implements the master clock used I2S audio output.
>
> Suggested-by: Geert Uytterhoeven <geert@...ux-m68k.org>
>
> v2: The driver provides only MCLK clock, not the SCLK and LRCLK,
> which are part of the I2S protocol.
>
> Suggested-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> ---
> .../boot/dts/renesas/r8a77950-salvator-x.dts | 3 +-
> arch/arm64/boot/dts/renesas/r8a77961.dtsi | 1 +
> .../boot/dts/renesas/salvator-common.dtsi | 47 +++++++++++++++++--
> 3 files changed, 45 insertions(+), 6 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/renesas/r8a77950-salvator-x.dts b/arch/arm64/boot/dts/renesas/r8a77950-salvator-x.dts
> index 2438825c9b22..e16c146808b6 100644
> --- a/arch/arm64/boot/dts/renesas/r8a77950-salvator-x.dts
> +++ b/arch/arm64/boot/dts/renesas/r8a77950-salvator-x.dts
> @@ -146,7 +146,8 @@ &sata {
> &sound_card {
> dais = <&rsnd_port0 /* ak4613 */
> &rsnd_port1 /* HDMI0 */
> - &rsnd_port2>; /* HDMI1 */
> + &rsnd_port2 /* HDMI1 */
> + &rsnd_port3>; /* adv7482 hdmi-in */
Ah - that was confusing at first... but HDMI0 and HDMI1 are *outputs*,
where of course the adv7482 is an input ;-)
Otherwise, I can't spot anything else yet so:
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
But I fear there may have been some churn around here, so it would be
good to see a rebase too.
--
Kieran
> };
>
> &usb2_phy2 {
> diff --git a/arch/arm64/boot/dts/renesas/r8a77961.dtsi b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
> index be3824bda632..b79907beaf31 100644
> --- a/arch/arm64/boot/dts/renesas/r8a77961.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
> @@ -861,6 +861,7 @@ rcar_sound,src {
> rcar_sound,ssi {
> ssi0: ssi-0 { };
> ssi1: ssi-1 { };
> + ssi4: ssi-4 { };
> };
> };
>
> diff --git a/arch/arm64/boot/dts/renesas/salvator-common.dtsi b/arch/arm64/boot/dts/renesas/salvator-common.dtsi
> index 98bbcafc8c0d..ead7f8d7a929 100644
> --- a/arch/arm64/boot/dts/renesas/salvator-common.dtsi
> +++ b/arch/arm64/boot/dts/renesas/salvator-common.dtsi
> @@ -460,7 +460,7 @@ pca9654: gpio@20 {
> #gpio-cells = <2>;
> };
>
> - video-receiver@70 {
> + adv7482_hdmi_in: video-receiver@70 {
> compatible = "adi,adv7482";
> reg = <0x70 0x71 0x72 0x73 0x74 0x75
> 0x60 0x61 0x62 0x63 0x64 0x65>;
> @@ -469,6 +469,7 @@ video-receiver@70 {
>
> #address-cells = <1>;
> #size-cells = <0>;
> + #clock-cells = <0>; /* the MCLK for I2S output */
>
> interrupt-parent = <&gpio6>;
> interrupt-names = "intrq1", "intrq2";
> @@ -510,6 +511,15 @@ adv7482_txb: endpoint {
> remote-endpoint = <&csi20_in>;
> };
> };
> +
> + port@c {
> + reg = <12>;
> +
> + adv7482_i2s: endpoint {
> + remote-endpoint = <&rsnd_endpoint3>;
> + system-clock-direction-out;
> + };
> + };
> };
>
> csa_vdd: adc@7c {
> @@ -684,7 +694,8 @@ sdhi3_pins_uhs: sd3_uhs {
> };
>
> sound_pins: sound {
> - groups = "ssi01239_ctrl", "ssi0_data", "ssi1_data_a";
> + groups = "ssi01239_ctrl", "ssi0_data", "ssi1_data_a",
> + "ssi4_data", "ssi4_ctrl";
> function = "ssi";
> };
>
> @@ -733,8 +744,8 @@ &rcar_sound {
> pinctrl-0 = <&sound_pins &sound_clk_pins>;
> pinctrl-names = "default";
>
> - /* Single DAI */
> - #sound-dai-cells = <0>;
> + /* multi DAI */
> + #sound-dai-cells = <1>;
>
> /* audio_clkout0/1/2/3 */
> #clock-cells = <1>;
> @@ -758,8 +769,19 @@ &rcar_sound {
> <&cpg CPG_MOD 1020>, <&cpg CPG_MOD 1021>,
> <&cpg CPG_MOD 1019>, <&cpg CPG_MOD 1018>,
> <&audio_clk_a>, <&cs2000>,
> - <&audio_clk_c>,
> + <&adv7482_hdmi_in>,
> <&cpg CPG_CORE CPG_AUDIO_CLK_I>;
> + clock-names = "ssi-all",
> + "ssi.9", "ssi.8", "ssi.7", "ssi.6",
> + "ssi.5", "ssi.4", "ssi.3", "ssi.2",
> + "ssi.1", "ssi.0",
> + "src.9", "src.8", "src.7", "src.6",
> + "src.5", "src.4", "src.3", "src.2",
> + "src.1", "src.0",
> + "mix.1", "mix.0",
> + "ctu.1", "ctu.0",
> + "dvc.0", "dvc.1",
> + "clk_a", "clk_b", "clk_c", "clk_i";
>
> ports {
> #address-cells = <1>;
> @@ -777,6 +799,21 @@ rsnd_endpoint0: endpoint {
> capture = <&ssi1 &src1 &dvc1>;
> };
> };
> + rsnd_port3: port@3 {
> + reg = <3>;
> + rsnd_endpoint3: endpoint {
> + remote-endpoint = <&adv7482_i2s>;
> +
> + dai-tdm-slot-num = <8>;
> + dai-tdm-slot-width = <32>;
> + dai-format = "left_j";
> + mclk-fs = <256>;
> + bitclock-master = <&adv7482_i2s>;
> + frame-master = <&adv7482_i2s>;
> +
> + capture = <&ssi4>;
> + };
> + };
> };
> };
>
>
--
Regards
--
Kieran
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