lkml.org 
[lkml]   [2020]   [Mar]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH v3 09/11] arm64: dts: renesas: salvator: add a connection from adv748x codec (HDMI input) to the R-Car SoC
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@cetitec.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-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.

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>

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).

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>

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.

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>

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@linux-m68k.org>

The driver provides only MCLK clock, not the SCLK and LRCLK,
which are part of the I2S protocol.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
.../boot/dts/renesas/r8a77950-salvator-x.dts | 3 +-
.../boot/dts/renesas/salvator-common.dtsi | 47 +++++++++++++++++--
2 files changed, 44 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 */
};

&usb2_phy2 {
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>;
+ };
+ };
};
};

--
2.25.1.25.g9ecbe7eb18

\
 
 \ /
  Last update: 2020-03-20 17:44    [W:0.118 / U:0.664 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site