From patchwork Fri May 5 06:40:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bhupesh Sharma X-Patchwork-Id: 679407 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C289AC77B7D for ; Fri, 5 May 2023 06:41:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231126AbjEEGlj (ORCPT ); Fri, 5 May 2023 02:41:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57242 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231165AbjEEGlc (ORCPT ); Fri, 5 May 2023 02:41:32 -0400 Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D95916366 for ; Thu, 4 May 2023 23:41:09 -0700 (PDT) Received: by mail-pj1-x102f.google.com with SMTP id 98e67ed59e1d1-24dfc3c662eso997435a91.3 for ; Thu, 04 May 2023 23:41:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1683268868; x=1685860868; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=fz6g2/625qlFmhiR93VnIJ+EVOsf12tbuuuDirZwZ9U=; b=MmA7Y+uUYYhv+yAq02uAK8CEia0LlV4pux4QKHpZFC0gkmfB1CQgMBVEQQg/9XU48g qYArqTuHSsRi8p5ZmrZYxMze6dorq5vbED1me6hx7gKOUkOcNk4qN0ZBhQtcB0mpMEJL DGEFs1sPgNw82bJdShebVPVxdBcZc/SwcCEp8AKfOiHStBE7L/hXSxKrjnGPu4211oyF rL43hNZYqLdiGqiI+KbaA/Pp5kWjLiyPFpXU83xoWhRjd9BuESvbieLZOmEPO7ux26T5 WEinZT8zCN7PTBiYTtPSVhySoqy3VAiXGmd336t6Gngckqh3aG28ZWrGCkPjU0UpNYH3 CBrw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683268868; x=1685860868; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=fz6g2/625qlFmhiR93VnIJ+EVOsf12tbuuuDirZwZ9U=; b=FMXivWXkV0AbaarOcEgrmfcpXOQmXSF2z/LtEV5VeKgyW9SD/Ws1+vJf0/6nm/YPdu UOGH9tO9cA6IvyQbUKmzTl2erlg82Af9A9nDBbFL2/w/U3RfPuuvHatC0hrmksFqKEml T68+rxgRpM132WogYKmwtDcYd0l8+hFXd7FLt4WmNf7vUjY+yUhsPtrJL/15eXSWIR65 0REaUOr94IW1Wq5BSfECnCfA9/YUslKJLx26xJrQskyvmCZpYFz0/Y8wbrPPPIZSmN0H ggYn4xyjvkk/cekCSNbup8HvfcjxgCBCZpFMjO387GOEyuroI2i/VJLz4x18Emc4nfTs R61w== X-Gm-Message-State: AC+VfDyKyJUG8Q8XC7PpykMfSGj0YE9tbttQiK7dJkWeZ82ZHXEUg4d6 4AHhPG0gtqVnvVniF1FbBe5L8fx02/2/xQlgNTw= X-Google-Smtp-Source: ACHHUZ7bu2wArNoHuLvlQnjk8//3Ao/e4FZ1KTLuUotie7kxB4Xc+nU1hmRfbTzX8r59/0PujftApw== X-Received: by 2002:a17:90b:3a8d:b0:23f:9fac:6b35 with SMTP id om13-20020a17090b3a8d00b0023f9fac6b35mr419434pjb.39.1683268868592; Thu, 04 May 2023 23:41:08 -0700 (PDT) Received: from localhost.localdomain ([223.233.65.180]) by smtp.gmail.com with ESMTPSA id c4-20020a170902848400b001ab0b2dad2fsm816251plo.211.2023.05.04.23.41.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 May 2023 23:41:08 -0700 (PDT) From: Bhupesh Sharma To: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-usb@vger.kernel.org Cc: agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, linux-kernel@vger.kernel.org, bhupesh.linux@gmail.com, bhupesh.sharma@linaro.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, krzysztof.kozlowski@linaro.org Subject: [PATCH v4 5/5] arm64: dts: qcom: qrb4210-rb2: Enable EUD debug peripheral Date: Fri, 5 May 2023 12:10:39 +0530 Message-Id: <20230505064039.1630025-6-bhupesh.sharma@linaro.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230505064039.1630025-1-bhupesh.sharma@linaro.org> References: <20230505064039.1630025-1-bhupesh.sharma@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Since the USB-C type port on the Qualcomm QRB4210-RB2 board can be set primarily in a 'device' configuration (with the default DIP switch settings), it makes sense to enable the EUD debug peripheral on the board by default by setting the USB 'dr_mode' property as 'otg'. Now, the EUD debug peripheral can be enabled by executing: $ echo 1 > /sys/bus/platform/drivers/qcom_eud/1610000.eud/enable Signed-off-by: Bhupesh Sharma Reviewed-by: Konrad Dybcio --- arch/arm64/boot/dts/qcom/qrb4210-rb2.dts | 27 +++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts index 1a0776a0cfd0..0ce72f1ebc10 100644 --- a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts +++ b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts @@ -30,6 +30,10 @@ vph_pwr: vph-pwr-regulator { }; }; +&eud { + status = "okay"; +}; + &qupv3_id_0 { status = "okay"; }; @@ -253,7 +257,28 @@ &usb { &usb_dwc3 { maximum-speed = "super-speed"; - dr_mode = "peripheral"; + + /* + * There is only one USB DWC3 controller on QRB4210 board and it is connected + * via a DIP Switch: + * - to either an USB - C type connector or an USB - A type connector + * (via a GL3590-S hub), and + * - to either an USB - A type connector (via a GL3590-S hub) or a connector + * for further connection with a mezzanine board. + * + * All of the above hardware muxes would allow us to hook things up in + * different ways to some potential benefit for static configurations (for e.g. + * on one hand we can have two USB - A type connectors and a USB - Ethernet + * connection available and on the other we can use the USB - C type in + * peripheral mode). + * + * Note that since the USB - C type can be used only in peripehral mode, + * so hardcoding the mode to 'peripheral' here makes sense. + * + * However since we want to use the EUD debug device, we set the mode as + * 'otg' here. + */ + dr_mode = "otg"; }; &usb_hsphy {