diff mbox series

[v2,3/3] arm64: dts: qcom: x1e80100: add soundwire controller resets

Message ID 20240624-x1e-swr-reset-v2-3-8bc677fcfa64@linaro.org (mailing list archive)
State Not Applicable, archived
Headers show
Series arm64: dts: qcom: x1e80100: Add soundwire controller resets | expand

Commit Message

Srinivas Kandagatla June 24, 2024, 1:32 p.m. UTC 
Soundwire controllers (WSA, WSA2, RX, TX) require reset lines to enable
switching clock control from hardware to software.

Add them along with the reset control providers.

Without this reset we might hit fifo under/over run when we try to write to
soundwire device registers.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 arch/arm64/boot/dts/qcom/x1e80100.dtsi | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

Comments

Konrad Dybcio June 24, 2024, 2:02 p.m. UTC | #1 
On 6/24/24 15:32, Srinivas Kandagatla wrote:
> Soundwire controllers (WSA, WSA2, RX, TX) require reset lines to enable
> switching clock control from hardware to software.
> 
> Add them along with the reset control providers.
> 
> Without this reset we might hit fifo under/over run when we try to write to
> soundwire device registers.
> 
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>

Konrad
Krzysztof Kozlowski June 24, 2024, 2:40 p.m. UTC | #2 
On 24/06/2024 15:32, Srinivas Kandagatla wrote:
> Soundwire controllers (WSA, WSA2, RX, TX) require reset lines to enable
> switching clock control from hardware to software.
> 
> Add them along with the reset control providers.
> 
> Without this reset we might hit fifo under/over run when we try to write to
> soundwire device registers.
> 
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/qcom/x1e80100.dtsi b/arch/arm64/boot/dts/qcom/x1e80100.dtsi
index 09fd6c8e53bb..fa28dbdd1419 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e80100.dtsi
@@ -4,6 +4,7 @@ 
  */
 
 #include <dt-bindings/clock/qcom,rpmh.h>
+#include <dt-bindings/clock/qcom,sc8280xp-lpasscc.h>
 #include <dt-bindings/clock/qcom,x1e80100-dispcc.h>
 #include <dt-bindings/clock/qcom,x1e80100-gcc.h>
 #include <dt-bindings/clock/qcom,x1e80100-tcsr.h>
@@ -3177,6 +3178,8 @@  swr3: soundwire@6ab0000 {
 
 			pinctrl-0 = <&wsa2_swr_active>;
 			pinctrl-names = "default";
+			resets = <&lpass_audiocc LPASS_AUDIO_SWR_WSA2_CGCR>;
+			reset-names = "swr_audio_cgcr";
 
 			qcom,din-ports = <4>;
 			qcom,dout-ports = <9>;
@@ -3225,6 +3228,8 @@  swr1: soundwire@6ad0000 {
 			pinctrl-0 = <&rx_swr_active>;
 			pinctrl-names = "default";
 
+			resets = <&lpass_audiocc LPASS_AUDIO_SWR_RX_CGCR>;
+			reset-names = "swr_audio_cgcr";
 			qcom,din-ports = <1>;
 			qcom,dout-ports = <11>;
 
@@ -3289,6 +3294,8 @@  swr0: soundwire@6b10000 {
 
 			pinctrl-0 = <&wsa_swr_active>;
 			pinctrl-names = "default";
+			resets = <&lpass_audiocc LPASS_AUDIO_SWR_WSA_CGCR>;
+			reset-names = "swr_audio_cgcr";
 
 			qcom,din-ports = <4>;
 			qcom,dout-ports = <9>;
@@ -3309,6 +3316,13 @@  swr0: soundwire@6b10000 {
 			status = "disabled";
 		};
 
+		lpass_audiocc: clock-controller@6b6c000 {
+			compatible = "qcom,x1e80100-lpassaudiocc", "qcom,sc8280xp-lpassaudiocc";
+			reg = <0 0x06b6c000 0 0x1000>;
+			#clock-cells = <1>;
+			#reset-cells = <1>;
+		};
+
 		swr2: soundwire@6d30000 {
 			compatible = "qcom,soundwire-v2.0.0";
 			reg = <0 0x06d30000 0 0x10000>;
@@ -3318,6 +3332,8 @@  swr2: soundwire@6d30000 {
 				     <GIC_SPI 520 IRQ_TYPE_LEVEL_HIGH>;
 			interrupt-names = "core", "wakeup";
 			label = "TX";
+			resets = <&lpasscc LPASS_AUDIO_SWR_TX_CGCR>;
+			reset-names = "swr_audio_cgcr";
 
 			pinctrl-0 = <&tx_swr_active>;
 			pinctrl-names = "default";
@@ -3474,6 +3490,13 @@  data-pins {
 			};
 		};
 
+		lpasscc: clock-controller@6ea0000 {
+			compatible = "qcom,x1e80100-lpasscc", "qcom,sc8280xp-lpasscc";
+			reg = <0 0x06ea0000 0 0x12000>;
+			#clock-cells = <1>;
+			#reset-cells = <1>;
+		};
+
 		lpass_ag_noc: interconnect@7e40000 {
 			compatible = "qcom,x1e80100-lpass-ag-noc";
 			reg = <0 0x7e40000 0 0xE080>;