linux-kernel - Re: [PATCH v4 0/4] arm64: dts: exynos: add initial support for Samsung Galaxy S22+

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Message-ID: <b41446ab-12a0-4ae5-be2c-7a60315062fb@gmail.com>
Date: Wed, 11 Jun 2025 23:44:10 +0300
From: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
To: Vinod Koul <vkoul@...nel.org>, Krzysztof Kozlowski <krzk@...nel.org>,
 Alim Akhtar <alim.akhtar@...sung.com>, Rob Herring <robh@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 0/4] arm64: dts: exynos: add initial support for
 Samsung Galaxy S22+

On 5/4/25 17:59, Ivaylo Ivanov wrote:
> Hey folks,
>
> This patchset adds device tree files for Exynos 2200 and Samsung
> Galaxy S22+.
>
> [1] is a dependancy on the aforementioned series for the usb phy drivers
> and bindings.
>
> Exynos 2200 SoC is an ARMv8 mobile SoC found in the Samsung Galaxy S22
> (r0s), S22+ (g0s), S22 Ultra (b0s) Add minimal support for that SoC,
> including psci, pmu, chipid, architecture timer and mct, pinctrl,
> clocks and usb.
>
> The devices using this SoC suffer from an issue caused by the stock
> Samsung bootloader, as it doesn't configure CNTFRQ_EL0. Hence it's
> needed to hardcode the adequate frequency in the timer node,
> otherwise the kernel panics.
>
> Another issue is that cpu2 and cpu3 fail to come up consistently, which
> leads to a hang later in the boot process. As A510 cores are clustered
> by two, it makes sense for both of these cpus to fail if there is a
> power issue. Disable them until the problem is figured out.
>
> Samsung Galaxy S22+ (SM-S906B), codenamed g0s, is a mobile phone from
> 2022. It features 8GB RAM, 128/256GB UFS 3.1, Exynos 2200 SoC and a
> 1080x2340 Dynamic AMOLED display.
>
> Further platform support will be added over time.
>
> Best regards,
> Ivaylo
>
> Changes in v4:
> - account for compatible changes in usb phy patches
> - use status fail instead of deleting cpu nodes
> - add a-b tag in the 1/4 patch
>
> Changes in v3:
> - account for the usbdrd changes in the exynos2200 soc dtsi
> - drop usbcon driver from the MAINTAINERS patch
>
> Changes in v2:
> - mention the board codename in the first patch's commit message
> - make all reg values hex in device trees
> - reorder usb_con above usb_dwc3
> - drop regulators for usb_con
> - remodel usb_con_phy to take usb_hsphy phandle
> - include MAINTAINERS patch in this patchset
>
> [1] https://lore.kernel.org/all/20250504144527.1723980-1-ivo.ivanov.ivanov1@gmail.com/

@Krzysztof - all dependencies should be merged now (correct me if I'm wrong).

Best regards,
Ivo

>
> Ivaylo Ivanov (4):
>   dt-bindings: arm: samsung: document g0s board binding
>   arm64: dts: exynos: add initial support for exynos2200 SoC
>   arm64: dts: exynos: add initial support for Samsung Galaxy S22+
>   MAINTAINERS: add entry for Samsung Exynos2200 SoC
>
>  .../bindings/arm/samsung/samsung-boards.yaml  |    6 +
>  MAINTAINERS                                   |   10 +
>  arch/arm64/boot/dts/exynos/Makefile           |    1 +
>  arch/arm64/boot/dts/exynos/exynos2200-g0s.dts |  169 ++
>  .../boot/dts/exynos/exynos2200-pinctrl.dtsi   | 1765 +++++++++++++++++
>  arch/arm64/boot/dts/exynos/exynos2200.dtsi    |  561 ++++++
>  6 files changed, 2512 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/exynos/exynos2200-g0s.dts
>  create mode 100644 arch/arm64/boot/dts/exynos/exynos2200-pinctrl.dtsi
>  create mode 100644 arch/arm64/boot/dts/exynos/exynos2200.dtsi
>