Re: [PATCH v5 1/1] arm64: dts: exynos: Add initial device tree support for Exynos7885 SoC

[Krzysztof Kozlowski]

On 07/02/2022 00:18, David Virag wrote:
> Add initial Exynos7885 device tree nodes with dts for the Samsung Galaxy
> A8 (2018), a.k.a. "jackpotlte", with model number "SM-A530F".
> Currently this includes some clock support, UART support, and I2C nodes.
> 
> Signed-off-by: David Virag <virag.david003@xxxxxxxxx>
> ---
> Changes in v2:
>   - Remove address-cells, and size-cells from dts, since they are
>     already in the dtsi.
>   - Lower case hex in memory node
>   - Fix node names with underscore instead of hyphen
>   - Fix line breaks
>   - Fix "-key" missing from gpio keys node names
>   - Use the form without "key" in gpio key labels on all keys
>   - Suffix pin configuration node names with "-pins"
>   - Remove "fimc_is_mclk" nodes from pinctrl dtsi for now
>   - Use macros for "samsung,pin-con-pdn", and "samsung,pin-con-pdn"
>   - Add comment about Arm PMU
>   - Rename "clock-oscclk" to "osc-clock"
>   - Include exynos-syscon-restart.dtsi instead of rewriting its contents
> 
> Changes in v3:
>   - Fix typo (seperate -> separate)
> 
> Changes in v4:
>   - Fixed leading 0x in clock-controller nodes
>   - Actually suffixed pin configuration node names with "-pins"
>   - Seperated Cortex-A53 and Cortex-A73 PMU
> 
> Changes in v5:
>   - Use "-gpio-bank" suffix in gpio bank nodes
>   - Remove interrupts from gpio-keys
>   - Move oscclk clock-frequency to board dts
>   - Seperate cmu_core clock names into 4 lines
>   - Use EXYNOS5420_PIN_DRV_LVx macros
>   - Add missing include from pinctrl dtsi
>   - Drop decon pinctrl nodes
>   - Order pinctrls by addresses
> 
>  arch/arm64/boot/dts/exynos/Makefile           |   7 +-
>  .../boot/dts/exynos/exynos7885-jackpotlte.dts |  93 ++
>  .../boot/dts/exynos/exynos7885-pinctrl.dtsi   | 855 ++++++++++++++++++
>  arch/arm64/boot/dts/exynos/exynos7885.dtsi    | 440 +++++++++
>  4 files changed, 1392 insertions(+), 3 deletions(-)
>  create mode 100644 arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
>  create mode 100644 arch/arm64/boot/dts/exynos/exynos7885-pinctrl.dtsi
>  create mode 100644 arch/arm64/boot/dts/exynos/exynos7885.dtsi
> 

Tried to apply and there was a conflict in Makefile, so this looks like
based on something wrong. Patches should be based on maintainer's tree,
which can be easily achieved by basing just on linux-next.

Anyway, I fixed the conflicts but it fails new pinctrl schema (already
in next) with few errors. This looks like the same error exynos850 had:
https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux.git/commit/?h=next/dt64&id=daeb1c2b50fb98118d6318b5fdbd9ef9bdfaeaf5
also maybe:
https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux.git/commit/?h=next/dt64&id=f377d4d4beafca755d2b6e6368895b1f3fb383c6

DTSI or schema might need adjustement.

> diff --git a/arch/arm64/boot/dts/exynos/Makefile b/arch/arm64/boot/dts/exynos/Makefile
> index b41e86df0a84..c68c4ad577ac 100644
> --- a/arch/arm64/boot/dts/exynos/Makefile
> +++ b/arch/arm64/boot/dts/exynos/Makefile
> @@ -1,6 +1,7 @@
>  # SPDX-License-Identifier: GPL-2.0
>  dtb-$(CONFIG_ARCH_EXYNOS) += \
> -	exynos5433-tm2.dtb	\
> -	exynos5433-tm2e.dtb	\
> -	exynos7-espresso.dtb	\
> +	exynos5433-tm2.dtb		\
> +	exynos5433-tm2e.dtb		\
> +	exynos7-espresso.dtb		\
> +	exynos7885-jackpotlte.dtb	\

Please rebase.

>  	exynosautov9-sadk.dtb
> diff --git a/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts b/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
> new file mode 100644
> index 000000000000..d707dba906d1
> --- /dev/null
> +++ b/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
> @@ -0,0 +1,93 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Samsung Galaxy A8 2018 (jackpotlte/SM-A530F) device tree source
> + *
> + * Copyright (c) 2021 Samsung Electronics Co., Ltd.
> + * Copyright (c) 2021 Dávid Virág
> + *

No need for blank line.

> + */
> +
> +/dts-v1/;
> +#include "exynos7885.dtsi"
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/input/input.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +
> +/ {
> +	model = "Samsung Galaxy A8 (2018)";
> +	compatible = "samsung,jackpotlte", "samsung,exynos7885";
> +	chassis-type = "handset";
> +
> +	aliases {
> +		serial0 = &serial_0;
> +		serial1 = &serial_1;
> +		serial2 = &serial_2;
> +	};
> +
> +	chosen {
> +		stdout-path = &serial_2;
> +	};
> +
> +	memory@80000000 {
> +		device_type = "memory";
> +		reg = <0x0 0x80000000 0x3da00000>,
> +		      <0x0 0xc0000000 0x40000000>,
> +		      <0x8 0x80000000 0x40000000>;
> +	};
> +
> +	gpio-keys {
> +		compatible = "gpio-keys";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&key_volup &key_voldown &key_power>;
> +
> +		volup-key {
> +			label = "Volume Up";
> +			linux,code = <KEY_VOLUMEUP>;
> +			gpios = <&gpa1 5 GPIO_ACTIVE_LOW>;
> +		};
> +
> +		voldown-key {
> +			label = "Volume Down";
> +			linux,code = <KEY_VOLUMEDOWN>;
> +			gpios = <&gpa1 6 GPIO_ACTIVE_LOW>;
> +		};
> +
> +		power-key {
> +			label = "Power";
> +			linux,code = <KEY_POWER>;
> +			gpios = <&gpa1 7 GPIO_ACTIVE_LOW>;
> +			wakeup-source;
> +		};
> +	};
> +};
> +
> +&serial_2 {
> +	status = "okay";
> +};
> +
> +&pinctrl_alive {
> +	key_volup: key-volup-pins {
> +		samsung,pins = "gpa1-5";
> +		samsung,pin-function = <EXYNOS_PIN_FUNC_F>;
> +		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
> +		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
> +	};
> +
> +	key_voldown: key-voldown-pins {
> +		samsung,pins = "gpa1-6";
> +		samsung,pin-function = <EXYNOS_PIN_FUNC_F>;
> +		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
> +		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
> +	};
> +
> +	key_power: key-power-pins {
> +		samsung,pins = "gpa1-7";
> +		samsung,pin-function = <EXYNOS_PIN_FUNC_F>;
> +		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
> +		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
> +	};
> +};
> +
> +&oscclk {

Order overriden nodes alphabeticall by label name, so (ossclk,
pinctrl_alive, serial).

Best regards,
Krzysztof