Yocto Linux build version 5.0.1 on ADSP-SC594 EZKIT - first experiences

> I can not use the uboot from version 5.0.1: It just does not find the USB memory stick, hence, I can not boot from USB. I solved this be going back to the uboot from version 5.0.0.
There is nothing changed on usb related between releases. I will do the test. 

> I can not use the spi boot of version 5.0.1 either, there are some file corruption reports when starting the kernel via spi and - finally - a kernel panic.
Can you share the logs? Are you referring to jffs2 errors? I built and flashed SPI flash and without issues. 

> With uboot from version 5.0.0, I could finally boot version 5.0.1 Linux OS and kernel from USB. It looks good, however, unfortunately, the serial console still hangs. This can be easily reproduced
Yes can reproduce serial hangs issue, could connect trough SSH without issues. 

> The modifications during the kernel build required to deactivate audio in Linux to involve the DSP for audio i/o are not prepared for sc594. I created a patch myself to achieve this.

Your modifications is similar to this ones https://github.com/analogdevicesinc/lnxdsp-adi-meta/blob/main/meta-adi-adsp-sc5xx/recipes-kernel/linux/linux-adi/0002-SC598-Enable-SHARC-ALSA-demo-disabling-most-linux-ba.patch ?

Regarding the modifications for "Audio via DSP only", here are the parts that I patched:

=======================================================================

+++ b/meta-adi-adsp-sc5xx/recipes-kernel/linux/linux-adi/0001-Patches-for-SC594-Audio-DSP.patch
@@ -0,0 +1,54 @@

+Subject: [PATCH] Patches for SC594 Audio DSP
+
+---
+ arch/arm/boot/dts/adi/sc594-som-ezkit.dts | 9 +++++++--
+ 1 file changed, 7 insertions(+), 2 deletions(-)
+
+diff --git a/arch/arm/boot/dts/adi/sc594-som-ezkit.dts b/arch/arm/boot/dts/adi/sc594-som-ezkit.dts
+index f845a3b0ac36..a06590fe5eb4 100644
+--- a/arch/arm/boot/dts/adi/sc594-som-ezkit.dts
++++ b/arch/arm/boot/dts/adi/sc594-som-ezkit.dts
+@@ -20,6 +20,7 @@ sound {
+ 			compatible = "adi,sc5xx-asoc-card";
+ 			adi,cpu-dai = <&i2s4>;
+ 			adi,codec = <&adau1962>, <&adau1979>;
++			status = "disabled";
+ 		};
+ 	};
+ };
+@@ -136,11 +137,13 @@ gige-reset {
+ 	adau1979: adau1979@11 {
+ 		compatible = "adi,adau1977";
+ 		reg = <0x11>;
++		status = "disabled";
+ 	};
+ 
+ 	adau1962: adau1962@4 {
+ 		compatible = "adi,adau1962";
+ 		reg = <0x4>;
++		status = "disabled";
+ 	};
+ 
+ };
+@@ -207,11 +210,13 @@ dp83848: ethernet-phy@1 {
+ &i2s4 {
+ 	pinctrl-names = "default";
+ 	pinctrl-0 = <&sru_dai1>;
+-	status = "okay";
++	// status = "okay";
++	status = "disabled";
+ };
+ 
+ &sru_ctrl_dai1 {
+-	status = "okay";
++	//status = "okay";
++	status = "disabled";
+ 
+ 	sru_dai1: sru_dai1_mux {
+ 		route {
+-- 
+2.43.0
+

diff --git a/meta-adi-adsp-sc5xx/recipes-kernel/linux/sharc_audio.inc b/meta-adi-adsp-sc5xx/recipes-kernel/linux/sharc_audio.inc
index 4236cbd..69a67dc 100644
--- a/meta-adi-adsp-sc5xx/recipes-kernel/linux/sharc_audio.inc
+++ b/meta-adi-adsp-sc5xx/recipes-kernel/linux/sharc_audio.inc
@@ -1,5 +1,6 @@
 HYBRID_AUDIO_PATCH = " \
 	file://0001-SC598-Audio-configuration-for-hybrid-audio-support.patch \
+	file://0001-Patches-for-SC594-Audio-DSP.patch \
 "
 SHARC_ALSA_PATCH = " \
 	${HYBRID_AUDIO_PATCH} \
-- 
2.43.0

Regarding the modifications for "Audio via DSP only", here are the parts that I patched:

=======================================================================

+++ b/meta-adi-adsp-sc5xx/recipes-kernel/linux/linux-adi/0001-Patches-for-SC594-Audio-DSP.patch
@@ -0,0 +1,54 @@

+Subject: [PATCH] Patches for SC594 Audio DSP
+
+---
+ arch/arm/boot/dts/adi/sc594-som-ezkit.dts | 9 +++++++--
+ 1 file changed, 7 insertions(+), 2 deletions(-)
+
+diff --git a/arch/arm/boot/dts/adi/sc594-som-ezkit.dts b/arch/arm/boot/dts/adi/sc594-som-ezkit.dts
+index f845a3b0ac36..a06590fe5eb4 100644
+--- a/arch/arm/boot/dts/adi/sc594-som-ezkit.dts
++++ b/arch/arm/boot/dts/adi/sc594-som-ezkit.dts
+@@ -20,6 +20,7 @@ sound {
+ 			compatible = "adi,sc5xx-asoc-card";
+ 			adi,cpu-dai = <&i2s4>;
+ 			adi,codec = <&adau1962>, <&adau1979>;
++			status = "disabled";
+ 		};
+ 	};
+ };
+@@ -136,11 +137,13 @@ gige-reset {
+ 	adau1979: adau1979@11 {
+ 		compatible = "adi,adau1977";
+ 		reg = <0x11>;
++		status = "disabled";
+ 	};
+ 
+ 	adau1962: adau1962@4 {
+ 		compatible = "adi,adau1962";
+ 		reg = <0x4>;
++		status = "disabled";
+ 	};
+ 
+ };
+@@ -207,11 +210,13 @@ dp83848: ethernet-phy@1 {
+ &i2s4 {
+ 	pinctrl-names = "default";
+ 	pinctrl-0 = <&sru_dai1>;
+-	status = "okay";
++	// status = "okay";
++	status = "disabled";
+ };
+ 
+ &sru_ctrl_dai1 {
+-	status = "okay";
++	//status = "okay";
++	status = "disabled";
+ 
+ 	sru_dai1: sru_dai1_mux {
+ 		route {
+-- 
+2.43.0
+

diff --git a/meta-adi-adsp-sc5xx/recipes-kernel/linux/sharc_audio.inc b/meta-adi-adsp-sc5xx/recipes-kernel/linux/sharc_audio.inc
index 4236cbd..69a67dc 100644
--- a/meta-adi-adsp-sc5xx/recipes-kernel/linux/sharc_audio.inc
+++ b/meta-adi-adsp-sc5xx/recipes-kernel/linux/sharc_audio.inc
@@ -1,5 +1,6 @@
 HYBRID_AUDIO_PATCH = " \
 	file://0001-SC598-Audio-configuration-for-hybrid-audio-support.patch \
+	file://0001-Patches-for-SC594-Audio-DSP.patch \
 "
 SHARC_ALSA_PATCH = " \
 	${HYBRID_AUDIO_PATCH} \
-- 
2.43.0