[PATCH 1/3] arm64: dts: rockchip: add ES8316 codec for Rock Pi4

Subsystems: the rest

STALE1872d

7 messages, 3 authors, 2021-06-18 · open the first message on its own page

[PATCH 1/3] arm64: dts: rockchip: add ES8316 codec for Rock Pi4

From: Alex Bee <hidden>
Date: 2021-06-17 04:50:07

Rock Pi4 boards have the codec connected to i2s0 and it is accessible
via i2c1 address 0x11.
Add an audio-graph-card it.

Signed-off-by: Alex Bee <redacted>
---
 .../boot/dts/rockchip/rk3399-rock-pi-4.dtsi   | 28 +++++++++++++++++++
 1 file changed, 28 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 7d0a7c697703..e5c1083174ff 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
@@ -36,6 +36,12 @@ sdio_pwrseq: sdio-pwrseq {
 		reset-gpios = <&gpio0 RK_PB2 GPIO_ACTIVE_LOW>;
 	};
 
+	sound {
+		compatible = "audio-graph-card";
+		label = "rockchip,rk3399";
+		dais = <&i2s0_p0>;
+	};
+
 	vcc12v_dcin: dc-12v {
 		compatible = "regulator-fixed";
 		regulator-name = "vcc12v_dcin";
@@ -422,6 +428,20 @@ &i2c1 {
 	i2c-scl-rising-time-ns = <300>;
 	i2c-scl-falling-time-ns = <15>;
 	status = "okay";
+
+	es8316: codec@11 {
+		compatible = "everest,es8316";
+		reg = <0x11>;
+		clocks = <&cru SCLK_I2S_8CH_OUT>;
+		clock-names = "mclk";
+		#sound-dai-cells = <0>;
+
+		port {
+			es8316_p0_0: endpoint {
+				remote-endpoint = <&i2s0_p0_0>;
+			};
+		};
+	};
 };
 
 &i2c3 {
@@ -441,6 +461,14 @@ &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 {
-- 
2.27.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH 2/3] arm64: dts: rockchip: Add RK3399 Rock Pi 4a plus board

From: Alex Bee <hidden>
Date: 2021-06-17 04:50:10

Rock Pi 4a plus board is the successor of Rock Pi 4a board.

Differences to the original version are
- has RK3399 OP1 SoC revision
- has eMMC (16 or 32 GB) soldered on board (no changes required,
  since it is enabled in rk3399-rock-pi-4.dtsi)
- dev boards have SPI flash soldered, but as per manufacturer response,
  this won't be the case for mass production boards

I didn't add yet another compatible, since the small set of differences
are captured by the device tree.

Signed-off-by: Alex Bee <redacted>
---
 arch/arm64/boot/dts/rockchip/Makefile              |  1 +
 .../boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts   | 14 ++++++++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts
diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index c3e00c0e2db7..dbd7d37950f1 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -43,6 +43,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-puma-haikou.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-roc-pc.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-roc-pc-mezzanine.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4a.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4a-plus.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4b.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4c.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock960.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts
new file mode 100644
index 000000000000..2deaab7f9307
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2019 Akash Gajjar <Akash_Gajjar@mentor.com>
+ * Copyright (c) 2019 Pragnesh Patel <Pragnesh_Patel@mentor.com>
+ */
+
+/dts-v1/;
+#include "rk3399-rock-pi-4.dtsi"
+#include "rk3399-op1-opp.dtsi"
+
+/ {
+	model = "Radxa ROCK Pi 4A plus";
+	compatible = "radxa,rockpi4a", "radxa,rockpi4", "rockchip,rk3399";
+};
-- 
2.27.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH 3/3] arm64: dts: rockchip: Add RK3399 Rock Pi 4b plus board

From: Alex Bee <hidden>
Date: 2021-06-17 04:50:12

Rock Pi 4b plus board is the successor of Rock Pi 4b board.

Differences to the original version are
- has RK3399 OP1 SoC revision
- has eMMC (16 or 32 GB) soldered on board (no changes required,
  since it is enabled in rk3399-rock-pi-4.dtsi)
- dev boards have SPI flash soldered, but as per manufacturer response,
  this won't be the case for mass production boards

I didn't add yet another compatible, since the small set of differences
are captured by the device tree.

Signed-off-by: Alex Bee <redacted>
---
 arch/arm64/boot/dts/rockchip/Makefile         |  1 +
 .../dts/rockchip/rk3399-rock-pi-4b-plus.dts   | 47 +++++++++++++++++++
 2 files changed, 48 insertions(+)
 create mode 100644 arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b-plus.dts
diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index dbd7d37950f1..e867e5889d44 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -45,6 +45,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-roc-pc-mezzanine.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4a.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4a-plus.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4b.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4b-plus.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4c.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock960.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rockpro64-v2.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b-plus.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b-plus.dts
new file mode 100644
index 000000000000..ea68b8c9d9ba
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b-plus.dts
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2019 Akash Gajjar <Akash_Gajjar@mentor.com>
+ * Copyright (c) 2019 Pragnesh Patel <Pragnesh_Patel@mentor.com>
+ */
+
+/dts-v1/;
+#include "rk3399-rock-pi-4.dtsi"
+#include "rk3399-op1-opp.dtsi"
+
+/ {
+	model = "Radxa ROCK Pi 4B plus";
+	compatible = "radxa,rockpi4b", "radxa,rockpi4", "rockchip,rk3399";
+
+	aliases {
+		mmc2 = &sdio0;
+	};
+};
+
+&sdio0 {
+	status = "okay";
+
+	brcmf: wifi@1 {
+		compatible = "brcm,bcm4329-fmac";
+		reg = <1>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <RK_PA3 GPIO_ACTIVE_HIGH>;
+		interrupt-names = "host-wake";
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_host_wake_l>;
+	};
+};
+
+&uart0 {
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm43438-bt";
+		clocks = <&rk808 1>;
+		clock-names = "ext_clock";
+		device-wakeup-gpios = <&gpio2 RK_PD3 GPIO_ACTIVE_HIGH>;
+		host-wakeup-gpios = <&gpio0 RK_PA4 GPIO_ACTIVE_HIGH>;
+		shutdown-gpios = <&gpio0 RK_PB1 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&bt_host_wake_l &bt_wake_l &bt_enable_h>;
+	};
+};
-- 
2.27.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH 1/3] arm64: dts: rockchip: add ES8316 codec for Rock Pi4

From: Johan Jonker <hidden>
Date: 2021-06-18 09:55:06

Hi Alex,

On 6/17/21 6:49 AM, Alex Bee wrote:
quoted hunk
Rock Pi4 boards have the codec connected to i2s0 and it is accessible
via i2c1 address 0x11.
Add an audio-graph-card it.

Signed-off-by: Alex Bee <redacted>
---
 .../boot/dts/rockchip/rk3399-rock-pi-4.dtsi   | 28 +++++++++++++++++++
 1 file changed, 28 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 7d0a7c697703..e5c1083174ff 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
@@ -36,6 +36,12 @@ sdio_pwrseq: sdio-pwrseq {
 		reset-gpios = <&gpio0 RK_PB2 GPIO_ACTIVE_LOW>;
 	};
 
+	sound {
+		compatible = "audio-graph-card";
+		label = "rockchip,rk3399";
See previous discussion:

https://lore.kernel.org/linux-rockchip/e5ab2c62-ad00-4cdf-8b0a-24fda59c980b@gmail.com/

It seems that aplay/linux? adds "-1" to it and removes the comma and
"-", so we get:

hdmisound
rockchiprk3399
rockchiprk339_1

Shouldn't we label it with something that reflect the function/output.
Shouldn't we standardize to SPDIF, HDMI and Analog similar to rk3318/rk3328?
Make a shorter label without spaces or special chars, so that chars
don't get removed?

Proposal:

Analog
HDMI
ES8316 <---
SPDIF


Possible example solutions:

[PATCH] arm64: dts: rockchip: more user friendly name of sound nodes
https://lore.kernel.org/lkml/20210110151913.3615326-1-katsuhiro@katsuster.net/

===

Johan
quoted hunk
+		dais = <&i2s0_p0>;
+	};
+
 	vcc12v_dcin: dc-12v {
 		compatible = "regulator-fixed";
 		regulator-name = "vcc12v_dcin";
@@ -422,6 +428,20 @@ &i2c1 {
 	i2c-scl-rising-time-ns = <300>;
 	i2c-scl-falling-time-ns = <15>;
 	status = "okay";
+
+	es8316: codec@11 {
+		compatible = "everest,es8316";
+		reg = <0x11>;
+		clocks = <&cru SCLK_I2S_8CH_OUT>;
+		clock-names = "mclk";
+		#sound-dai-cells = <0>;
+
+		port {
+			es8316_p0_0: endpoint {
+				remote-endpoint = <&i2s0_p0_0>;
+			};
+		};
+	};
 };
 
 &i2c3 {
@@ -441,6 +461,14 @@ &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 {
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH 2/3] arm64: dts: rockchip: Add RK3399 Rock Pi 4a plus board

From: Heiko Stübner <heiko@sntech.de>
Date: 2021-06-18 13:08:42

Am Donnerstag, 17. Juni 2021, 06:49:54 CEST schrieb Alex Bee:
quoted hunk
Rock Pi 4a plus board is the successor of Rock Pi 4a board.

Differences to the original version are
- has RK3399 OP1 SoC revision
- has eMMC (16 or 32 GB) soldered on board (no changes required,
  since it is enabled in rk3399-rock-pi-4.dtsi)
- dev boards have SPI flash soldered, but as per manufacturer response,
  this won't be the case for mass production boards

I didn't add yet another compatible, since the small set of differences
are captured by the device tree.

Signed-off-by: Alex Bee <redacted>
---
 arch/arm64/boot/dts/rockchip/Makefile              |  1 +
 .../boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts   | 14 ++++++++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts
diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index c3e00c0e2db7..dbd7d37950f1 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -43,6 +43,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-puma-haikou.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-roc-pc.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-roc-pc-mezzanine.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4a.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4a-plus.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4b.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4c.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock960.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts
new file mode 100644
index 000000000000..2deaab7f9307
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2019 Akash Gajjar <Akash_Gajjar@mentor.com>
+ * Copyright (c) 2019 Pragnesh Patel <Pragnesh_Patel@mentor.com>
+ */
+
+/dts-v1/;
+#include "rk3399-rock-pi-4.dtsi"
+#include "rk3399-op1-opp.dtsi"
+
+/ {
+	model = "Radxa ROCK Pi 4A plus";
+	compatible = "radxa,rockpi4a", "radxa,rockpi4", "rockchip,rk3399";
hmm, I don't really follow why you're re-using the radxa,rockpi4a
compatible. I'd assume this should be radxa,rockpi4a+ or something?

I.e. if a bootloader needs to select the matching devicetree from a list
of available devicetrees, this could end up running a regular rockpi4a
(without +) using the OP1 operating points and thus at way too high
frequencies.


Heiko

+};




_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH 1/3] arm64: dts: rockchip: add ES8316 codec for Rock Pi4

From: Alex Bee <hidden>
Date: 2021-06-18 16:15:06

Hi Johan,

Am 18.06.21 um 11:54 schrieb Johan Jonker:
Hi Alex,

On 6/17/21 6:49 AM, Alex Bee wrote:
quoted
Rock Pi4 boards have the codec connected to i2s0 and it is accessible
via i2c1 address 0x11.
Add an audio-graph-card it.

Signed-off-by: Alex Bee <redacted>
---
  .../boot/dts/rockchip/rk3399-rock-pi-4.dtsi   | 28 +++++++++++++++++++
  1 file changed, 28 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 7d0a7c697703..e5c1083174ff 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
@@ -36,6 +36,12 @@ sdio_pwrseq: sdio-pwrseq {
  		reset-gpios = <&gpio0 RK_PB2 GPIO_ACTIVE_LOW>;
  	};
  
+	sound {
+		compatible = "audio-graph-card";
+		label = "rockchip,rk3399";
See previous discussion:

https://lore.kernel.org/linux-rockchip/e5ab2c62-ad00-4cdf-8b0a-24fda59c980b@gmail.com/

It seems that aplay/linux? adds "-1" to it and removes the comma and
"-", so we get:

hdmisound
rockchiprk3399
rockchiprk339_1

Shouldn't we label it with something that reflect the function/output.
Shouldn't we standardize to SPDIF, HDMI and Analog similar to rk3318/rk3328?
Make a shorter label without spaces or special chars, so that chars
don't get removed?

Proposal:

Analog
HDMI
ES8316 <---
SPDIF
OK - thanks for that, I wasn't aware.

I'll go for "Analog", since that seems to be the accepted solution for 
RockPro64 board and I think we should keep it the same across boards (on 
distro side it can get annoying if you need a couple of alsa configs 
with the same contents, just because audio card names are different).

Alex.

Possible example solutions:

[PATCH] arm64: dts: rockchip: more user friendly name of sound nodes
https://lore.kernel.org/lkml/20210110151913.3615326-1-katsuhiro@katsuster.net/

===

Johan
quoted
+		dais = <&i2s0_p0>;
+	};
+
  	vcc12v_dcin: dc-12v {
  		compatible = "regulator-fixed";
  		regulator-name = "vcc12v_dcin";
@@ -422,6 +428,20 @@ &i2c1 {
  	i2c-scl-rising-time-ns = <300>;
  	i2c-scl-falling-time-ns = <15>;
  	status = "okay";
+
+	es8316: codec@11 {
+		compatible = "everest,es8316";
+		reg = <0x11>;
+		clocks = <&cru SCLK_I2S_8CH_OUT>;
+		clock-names = "mclk";
+		#sound-dai-cells = <0>;
+
+		port {
+			es8316_p0_0: endpoint {
+				remote-endpoint = <&i2s0_p0_0>;
+			};
+		};
+	};
  };
  
  &i2c3 {
@@ -441,6 +461,14 @@ &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 {
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH 2/3] arm64: dts: rockchip: Add RK3399 Rock Pi 4a plus board

From: Alex Bee <hidden>
Date: 2021-06-18 16:30:29

Hi Heiko,

Am 18.06.21 um 15:08 schrieb Heiko Stübner:
Am Donnerstag, 17. Juni 2021, 06:49:54 CEST schrieb Alex Bee:
quoted
Rock Pi 4a plus board is the successor of Rock Pi 4a board.

Differences to the original version are
- has RK3399 OP1 SoC revision
- has eMMC (16 or 32 GB) soldered on board (no changes required,
   since it is enabled in rk3399-rock-pi-4.dtsi)
- dev boards have SPI flash soldered, but as per manufacturer response,
   this won't be the case for mass production boards

I didn't add yet another compatible, since the small set of differences
are captured by the device tree.

Signed-off-by: Alex Bee <redacted>
---
  arch/arm64/boot/dts/rockchip/Makefile              |  1 +
  .../boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts   | 14 ++++++++++++++
  2 files changed, 15 insertions(+)
  create mode 100644 arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts
diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index c3e00c0e2db7..dbd7d37950f1 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -43,6 +43,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-puma-haikou.dtb
  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-roc-pc.dtb
  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-roc-pc-mezzanine.dtb
  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4a.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4a-plus.dtb
  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4b.dtb
  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4c.dtb
  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock960.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts
new file mode 100644
index 000000000000..2deaab7f9307
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4a-plus.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2019 Akash Gajjar <Akash_Gajjar@mentor.com>
+ * Copyright (c) 2019 Pragnesh Patel <Pragnesh_Patel@mentor.com>
+ */
+
+/dts-v1/;
+#include "rk3399-rock-pi-4.dtsi"
+#include "rk3399-op1-opp.dtsi"
+
+/ {
+	model = "Radxa ROCK Pi 4A plus";
+	compatible = "radxa,rockpi4a", "radxa,rockpi4", "rockchip,rk3399";
hmm, I don't really follow why you're re-using the radxa,rockpi4a
compatible. I'd assume this should be radxa,rockpi4a+ or something?
Ah, yes this was part of my cover letter, which obviously got lost 
somewhere.

Anyways: Reason I thought of was: For example broadcom nvram file names 
must match the compatible string and they have to be copied/symlinked 
over and over if we add new compatibles for every minor changed revision 
of a board. I guess there are more examples for that in userland.
I.e. if a bootloader needs to select the matching devicetree from a list
of available devicetrees, this could end up running a regular rockpi4a
(without +) using the OP1 operating points and thus at way too high
frequencies.
Besides I wasn't aware, that "a bootloader" can do that already I 
understand your concerns and will change it.

Alex.
Heiko

quoted
+};
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help