[PATCH v1] arm64: dts: exynos: r8s: enable UART interfaces and aliases

[PATCH v1] arm64: dts: exynos: r8s: enable UART interfaces and aliases

[Denzeel Oliva]

 - usi_uart: Main UART interface, required for debugging or
   communication.
 - usi_bt_uart: UART interface for Bluetooth connectivity.
 - Added serial0 and serial1 aliases for standard UART access.

Signed-off-by: Denzeel Oliva <wachiturroxd150@gmail.com>
---
 arch/arm64/boot/dts/exynos/exynos990-r8s.dts | 23 ++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/exynos990-r8s.dts b/arch/arm64/boot/dts/exynos/exynos990-r8s.dts
index 6bae3c0ec..049b40af2 100644
--- a/arch/arm64/boot/dts/exynos/exynos990-r8s.dts
+++ b/arch/arm64/boot/dts/exynos/exynos990-r8s.dts
@@ -18,6 +18,11 @@ / {
 	#address-cells = <2>;
 	#size-cells = <2>;
 
+	aliases {
+		serial0 = &serial_0;
+		serial1 = &serial_1;
+	};
+
 	chosen {
 		#address-cells = <2>;
 		#size-cells = <2>;
@@ -113,3 +118,21 @@ key_volup: key-volup-pins {
 		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
 	};
 };
+
+&usi_uart {
+	samsung,clkreq-on; /* needed for UART mode */
+	status = "okay";
+};
+
+&serial_0 {
+	status = "okay";
+};
+
+&usi_bt_uart {
+	samsung,clkreq-on; /* needed for UART mode */
+	status = "okay";
+};
+
+&serial_1 {
+	status = "okay";
+};
-- 
2.48.1

Re: [PATCH v1] arm64: dts: exynos: r8s: enable UART interfaces and aliases

[Rob Herring (Arm)]

On Thu, 13 Feb 2025 00:02:26 +0000, Denzeel Oliva wrote:
>  - usi_uart: Main UART interface, required for debugging or
>    communication.
>  - usi_bt_uart: UART interface for Bluetooth connectivity.
>  - Added serial0 and serial1 aliases for standard UART access.
> 
> Signed-off-by: Denzeel Oliva <wachiturroxd150@gmail.com>
> ---
>  arch/arm64/boot/dts/exynos/exynos990-r8s.dts | 23 ++++++++++++++++++++
>  1 file changed, 23 insertions(+)
> 


My bot found new DTB warnings on the .dts files added or changed in this
series.

Some warnings may be from an existing SoC .dtsi. Or perhaps the warnings
are fixed by another series. Ultimately, it is up to the platform
maintainer whether these warnings are acceptable or not. No need to reply
unless the platform maintainer has comments.

If you already ran DT checks and didn't see these error(s), then
make sure dt-schema is up to date:

  pip3 install dtschema --upgrade


New warnings running 'make CHECK_DTBS=y for arch/arm64/boot/dts/exynos/' for 20250213000226.277-1-wachiturroxd150@gmail.com:

Error: arch/arm64/boot/dts/exynos/exynos990-r8s.dts:122.1-10 Label or path usi_uart not found
Error: arch/arm64/boot/dts/exynos/exynos990-r8s.dts:127.1-10 Label or path serial_0 not found
Error: arch/arm64/boot/dts/exynos/exynos990-r8s.dts:131.1-13 Label or path usi_bt_uart not found
Error: arch/arm64/boot/dts/exynos/exynos990-r8s.dts:136.1-10 Label or path serial_1 not found
FATAL ERROR: Syntax error parsing input tree
make[3]: *** [scripts/Makefile.dtbs:131: arch/arm64/boot/dts/exynos/exynos990-r8s.dtb] Error 1
make[2]: *** [scripts/Makefile.build:465: arch/arm64/boot/dts/exynos] Error 2
make[2]: Target 'arch/arm64/boot/dts/exynos/exynos990-r8s.dtb' not remade because of errors.
make[1]: *** [/home/rob/proj/linux-dt-testing/Makefile:1464: exynos/exynos990-r8s.dtb] Error 2
make: *** [Makefile:251: __sub-make] Error 2
make: Target 'exynos/exynos8895-dreamlte.dtb' not remade because of errors.
make: Target 'exynos/exynos850-e850-96.dtb' not remade because of errors.
make: Target 'exynos/exynos7885-jackpotlte.dtb' not remade because of errors.
make: Target 'exynos/exynos990-x1slte.dtb' not remade because of errors.
make: Target 'exynos/exynos5433-tm2.dtb' not remade because of errors.
make: Target 'exynos/exynos990-r8s.dtb' not remade because of errors.
make: Target 'exynos/exynos7-espresso.dtb' not remade because of errors.
make: Target 'exynos/google/gs101-oriole.dtb' not remade because of errors.
make: Target 'exynos/google/gs101-raven.dtb' not remade because of errors.
make: Target 'exynos/exynosautov920-sadk.dtb' not remade because of errors.
make: Target 'exynos/exynosautov9-sadk.dtb' not remade because of errors.
make: Target 'exynos/exynos990-c1s.dtb' not remade because of errors.
make: Target 'exynos/exynos9810-starlte.dtb' not remade because of errors.
make: Target 'exynos/exynos990-x1s.dtb' not remade because of errors.
make: Target 'exynos/exynos5433-tm2e.dtb' not remade because of errors.

Re: [PATCH v1] arm64: dts: exynos: r8s: enable UART interfaces and aliases

[kernel test robot]

Hi Denzeel,

kernel test robot noticed the following build errors:

[auto build test ERROR on krzk/for-next]
[also build test ERROR on linus/master v6.14-rc2 next-20250213]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Denzeel-Oliva/arm64-dts-exynos-r8s-enable-UART-interfaces-and-aliases/20250213-080512
base:   https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux.git for-next
patch link:    https://lore.kernel.org/r/20250213000226.277-1-wachiturroxd150%40gmail.com
patch subject: [PATCH v1] arm64: dts: exynos: r8s: enable UART interfaces and aliases
config: arm64-defconfig (https://download.01.org/0day-ci/archive/20250214/202502140220.nEdgzjof-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250214/202502140220.nEdgzjof-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502140220.nEdgzjof-lkp@intel.com/

All errors (new ones prefixed by >>):

>> Error: arch/arm64/boot/dts/exynos/exynos990-r8s.dts:122.1-10 Label or path usi_uart not found
>> Error: arch/arm64/boot/dts/exynos/exynos990-r8s.dts:127.1-10 Label or path serial_0 not found
>> Error: arch/arm64/boot/dts/exynos/exynos990-r8s.dts:131.1-13 Label or path usi_bt_uart not found
>> Error: arch/arm64/boot/dts/exynos/exynos990-r8s.dts:136.1-10 Label or path serial_1 not found
   FATAL ERROR: Syntax error parsing input tree

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki