From patchwork Sun Jul 16 22:05:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markuss Broks X-Patchwork-Id: 13316386 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail-lj1-x22e.google.com ([2a00:1450:4864:20::22e]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qL9uU-00G1yN-2i for linux-arm-kernel@lists.infradead.org; Sun, 16 Jul 2023 22:08:12 +0000 Received: by mail-lj1-x22e.google.com with SMTP id 38308e7fff4ca-2b933bbd3eeso21525241fa.1 for ; Sun, 16 Jul 2023 15:08:10 -0700 (PDT) From: Markuss Broks Subject: [PATCH 7/7] ARM: dts: exynos: k3g: Add display support Date: Mon, 17 Jul 2023 01:05:09 +0300 Message-ID: <20230716220644.22158-9-markuss.broks@gmail.com> In-Reply-To: <20230716220644.22158-1-markuss.broks@gmail.com> References: <20230716220644.22158-1-markuss.broks@gmail.com> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+lwn-linux-arm-kernel=archive.lwn.net@lists.infradead.org List-Archive: To: Krzysztof Kozlowski Cc: Markuss Broks , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Alim Akhtar , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org This device has Samsung S6E3FA2 DSI display installed, this adds the device-tree bindings for it but two things prevent it from being fully usable: one is a bug in Exynos5 DSI subsystem, which I believe is not tested properly; the bug occurs randomly regardless of any variables, but it seems to occur less if the Exynos DRM kernel module is loaded later in the kernel boot process (the bug concludes in display filling with static) ; another issue is that efforts to support the S6E3FA2 panel are still going on, and the driver for the panel is not in the kernel tree yet. Signed-off-by: Markuss Broks --- arch/arm/boot/dts/exynos5422-samsung-k3g.dts | 41 ++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/arch/arm/boot/dts/exynos5422-samsung-k3g.dts b/arch/arm/boot/dts/exynos5422-samsung-k3g.dts index e019b630db94..954de392afbf 100644 --- a/arch/arm/boot/dts/exynos5422-samsung-k3g.dts +++ b/arch/arm/boot/dts/exynos5422-samsung-k3g.dts @@ -203,6 +203,42 @@ &cpu4 { cpu-supply = <&buck6_reg>; }; +&mixer { + status = "okay"; +}; + +&fimd { + status = "okay"; + samsung,invert-vclk; +}; + +&dsi { + status = "okay"; + + samsung,pll-clock-frequency = <24000000>; + samsung,burst-clock-frequency = <500000000>; + samsung,esc-clock-frequency = <16000000>; + + vddcore-supply = <&ldo8_reg>; + vddio-supply = <&ldo10_reg>; + + #address-cells = <1>; + #size-cells = <0>; + + panel@0 { + reg = <0>; + compatible = "samsung,s6e3fa2"; + + reset-gpios = <&gpy7 4 GPIO_ACTIVE_LOW>; + + vddio-supply = <&ldo25_reg>; + vdd-supply = <&ldo28_reg>; + + pinctrl-names = "default"; + pinctrl-0 = <&display_reset>; + }; +}; + &gpu { status = "okay"; mali-supply = <&buck4_reg>; @@ -839,6 +875,11 @@ touchkey_irq: touchkey-irq-pins { samsung,pin-pud = ; }; + display_reset: display-reset-pins { + samsung,pins = "gpy7-4"; + samsung,pin-pud = ; + }; + wlan_reset: wlan-reset { samsung,pins = "gpy7-7"; samsung,pin-pud = ;