From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 509A1C71157 for ; Tue, 17 Jun 2025 09:40:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:Reply-To:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:References:Cc:To:Subject: From:MIME-Version:Date:Message-ID:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=c9tLyQ5Y+WxlSP7qQOVtwtuzJDpoR4FK+Vz1SHbG0WQ=; b=LNXl+Mwdqk+X0M44fzlJvwj7I7 yFr+idPtxAuAgprG3XtlYgF7QyLvVd+5b1JFYdeUaGL22Vsx8BbruV+1H06x2x/j8qRl0vpHrQQk4 0wJ3laq7vO3IPzCkzwmMY2wpyi4AmcUQsb3v3f/bmNy30XLEc7FWfQvlmhuBZCoS/rcadP3DpHn38 Tis10LZq9FvYpfLA8fDfWAN6ieCtNs2zYGvtvBL4HO4DkNuSE7XmOAGSGS+PjlsF9F9/An2Gx3gfm DnRb2J2cfB+ruu/RJMjaOlhNX+qq+6hy24OLCjcw7S1LwHqAP6/TEP36Qy5RsCpeGkdrspKCmpk6a RrLGoEag==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uRSnn-00000006nEE-0JCH; Tue, 17 Jun 2025 09:40:23 +0000 Received: from mail-wm1-x333.google.com ([2a00:1450:4864:20::333]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uRSe3-00000006kwH-0JkM for linux-phy@lists.infradead.org; Tue, 17 Jun 2025 09:30:21 +0000 Received: by mail-wm1-x333.google.com with SMTP id 5b1f17b1804b1-450cf214200so46574335e9.1 for ; Tue, 17 Jun 2025 02:30:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1750152617; x=1750757417; darn=lists.infradead.org; h=content-transfer-encoding:in-reply-to:organization:autocrypt :content-language:references:cc:to:subject:reply-to:from:user-agent :mime-version:date:message-id:from:to:cc:subject:date:message-id :reply-to; bh=xl41cDxLf5qSZURNGABwnShoulmiUtSz5ST04bw9Wkg=; b=II8Yx93cShhcTdGGTheGBB9QxOy7ykBDKrB+1ZjdDENSi6rdyRe0as6dWMnaPIXoJ8 3rsKm7Vk1ixb0zAn3WlbRGpWkRiq1L2WtL4N7ljTMAydtP7+iht/wDhklU60Vz37vwyL oLyJaZTbGFOlhr3WCasD4/E5aRaqChNqICJ8oLNVa/osvS6A02X6im+rNlNyZH2Ryi/w dWUrNZ8Lix6ZkMkH4SXgbPkm0DaBs79LP+YIG5wM/VcXSfdLSuHE94Wu8ykf1/OzoFkI h1fQYHH49GyMfdkkxhASLBTIddDD3SJ4rQiYbrazeQVHWFhWpRSIsQIA+xZkmCclnxPJ dk/A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1750152617; x=1750757417; h=content-transfer-encoding:in-reply-to:organization:autocrypt :content-language:references:cc:to:subject:reply-to:from:user-agent :mime-version:date:message-id:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to; bh=xl41cDxLf5qSZURNGABwnShoulmiUtSz5ST04bw9Wkg=; b=m4oJoUSJt+DXrXF/VwiojTanaLnuHMR8gv0ZQV29007ZF2TjzfDHhAIkoTHGc0K0HL 1M9svqkKpROd3oqMwviKyRs0gM3d9I3B7fwu8YlKnYpafMfK/uTihvZSZpLRSArKod5R Xjm75XzfhnR6Xzjf37zGDhmy3+KyyMMVuXuVk+xAU0n3pqvWWGvg+cEyRw8s27tdZMaX EmeDPNyT66unkTGpLXk1bcTrQm162XhA2Kf6ooxVL0/oiPld+1juiU882Ur8ycQIPOJA sQRaczXzzL32CULSZMGyO/+UOGqCCHPX3ZD30SvrpjfgnU52dU8AlzYV5NEPCc13K6sk kCkA== X-Forwarded-Encrypted: i=1; AJvYcCWCvtd5PT/UjCWT8r+7MPUzsUgwCdNZxDNTz9zs15qth05OfETNA1Ob2HuRa2YpSN+03fukTBVXJDg=@lists.infradead.org X-Gm-Message-State: AOJu0YwsBcGRCOc7WC0dQqDmTPKcOvFPw4DU3NmIvzvTRvuAFN/HGwsJ YUYyEuebOaUkSKScsl06EzQEaUfoM6Bps9LCbpjYgPgMwIETzzZlD4ROexhql4di4KM= X-Gm-Gg: ASbGncsZEMaAgBIgK//kiSbWLze4JSeFyezbL8XeYKDK2IlqEe45d7SCxpmRHWkHWsd 0q2nzorRFaOyWgNGavz1MJFafA2eef8jP/4lmqIDpFkMF7LehD91s/WLB6740QqbMZoKHmQAZQO mEXeJhIl7I7hnsiDQQPLe+KMLwHWu68NsJ9xVQovwJ3AmMP2L7zIUtOYzPjSu4X3Lr5XImQECgs u1PefJoTo45tlVjliWHwlIqsIGXxAatuOg/MCTP5pxpXc5qGSZKwGWk733sFQW5f9wDLGi2/i49 Vz6uwI2ktq8u6Gcm7UB9YLhC/5rAv6wndAkAIOAHr6W6pDGAsMShgLEmlOX+fvMbK+88yXgnaRi Umf6BVmEwlWmdw7JXfN8Z1NxddXre0RQkOFF3P5Y= X-Google-Smtp-Source: AGHT+IH90fM/Hl2qQnPaSI6dqHDTANiZZutrp7G9byHerpIanfYAuG3VuGrXV1ZLniUQsldJImLpAQ== X-Received: by 2002:a05:600c:8b01:b0:441:d437:e3b8 with SMTP id 5b1f17b1804b1-4533cac9179mr105111595e9.23.1750152616870; Tue, 17 Jun 2025 02:30:16 -0700 (PDT) Received: from ?IPV6:2a01:e0a:3d9:2080:3819:3250:4f73:db31? ([2a01:e0a:3d9:2080:3819:3250:4f73:db31]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a568a54aeasm13662038f8f.14.2025.06.17.02.30.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 17 Jun 2025 02:30:11 -0700 (PDT) Message-ID: <9c512a8d-a39e-4b3a-b617-80b2dc7d14b3@linaro.org> Date: Tue, 17 Jun 2025 11:30:10 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: neil.armstrong@linaro.org Subject: Re: [PATCH 3/5] phy: rockchip: phy-rockchip-inno-csidphy: allow writes to grf register 0 To: michael.riesch@collabora.com, Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Vinod Koul , Kishon Vijay Abraham I , Philipp Zabel , Jagan Teki , Sebastian Reichel , Collabora Kernel Team Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org References: <20250616-rk3588-csi-dphy-v1-0-84eb3b2a736c@collabora.com> <20250616-rk3588-csi-dphy-v1-3-84eb3b2a736c@collabora.com> Content-Language: en-US, fr Autocrypt: addr=neil.armstrong@linaro.org; keydata= xsBNBE1ZBs8BCAD78xVLsXPwV/2qQx2FaO/7mhWL0Qodw8UcQJnkrWmgTFRobtTWxuRx8WWP GTjuhvbleoQ5Cxjr+v+1ARGCH46MxFP5DwauzPekwJUD5QKZlaw/bURTLmS2id5wWi3lqVH4 BVF2WzvGyyeV1o4RTCYDnZ9VLLylJ9bneEaIs/7cjCEbipGGFlfIML3sfqnIvMAxIMZrvcl9 qPV2k+KQ7q+aXavU5W+yLNn7QtXUB530Zlk/d2ETgzQ5FLYYnUDAaRl+8JUTjc0CNOTpCeik 80TZcE6f8M76Xa6yU8VcNko94Ck7iB4vj70q76P/J7kt98hklrr85/3NU3oti3nrIHmHABEB AAHNKk5laWwgQXJtc3Ryb25nIDxuZWlsLmFybXN0cm9uZ0BsaW5hcm8ub3JnPsLAkQQTAQoA OwIbIwULCQgHAwUVCgkICwUWAgMBAAIeAQIXgBYhBInsPQWERiF0UPIoSBaat7Gkz/iuBQJk Q5wSAhkBAAoJEBaat7Gkz/iuyhMIANiD94qDtUTJRfEW6GwXmtKWwl/mvqQtaTtZID2dos04 YqBbshiJbejgVJjy+HODcNUIKBB3PSLaln4ltdsV73SBcwUNdzebfKspAQunCM22Mn6FBIxQ GizsMLcP/0FX4en9NaKGfK6ZdKK6kN1GR9YffMJd2P08EO8mHowmSRe/ExAODhAs9W7XXExw UNCY4pVJyRPpEhv373vvff60bHxc1k/FF9WaPscMt7hlkbFLUs85kHtQAmr8pV5Hy9ezsSRa GzJmiVclkPc2BY592IGBXRDQ38urXeM4nfhhvqA50b/nAEXc6FzqgXqDkEIwR66/Gbp0t3+r yQzpKRyQif3OwE0ETVkGzwEIALyKDN/OGURaHBVzwjgYq+ZtifvekdrSNl8TIDH8g1xicBYp QTbPn6bbSZbdvfeQPNCcD4/EhXZuhQXMcoJsQQQnO4vwVULmPGgtGf8PVc7dxKOeta+qUh6+ SRh3vIcAUFHDT3f/Zdspz+e2E0hPV2hiSvICLk11qO6cyJE13zeNFoeY3ggrKY+IzbFomIZY 4yG6xI99NIPEVE9lNBXBKIlewIyVlkOaYvJWSV+p5gdJXOvScNN1epm5YHmf9aE2ZjnqZGoM Mtsyw18YoX9BqMFInxqYQQ3j/HpVgTSvmo5ea5qQDDUaCsaTf8UeDcwYOtgI8iL4oHcsGtUX oUk33HEAEQEAAcLAXwQYAQIACQUCTVkGzwIbDAAKCRAWmrexpM/4rrXiB/sGbkQ6itMrAIfn M7IbRuiSZS1unlySUVYu3SD6YBYnNi3G5EpbwfBNuT3H8//rVvtOFK4OD8cRYkxXRQmTvqa3 3eDIHu/zr1HMKErm+2SD6PO9umRef8V82o2oaCLvf4WeIssFjwB0b6a12opuRP7yo3E3gTCS KmbUuLv1CtxKQF+fUV1cVaTPMyT25Od+RC1K+iOR0F54oUJvJeq7fUzbn/KdlhA8XPGzwGRy 4zcsPWvwnXgfe5tk680fEKZVwOZKIEuJC3v+/yZpQzDvGYJvbyix0lHnrCzq43WefRHI5XTT QbM0WUIBIcGmq38+OgUsMYu4NzLu7uZFAcmp6h8g Organization: Linaro In-Reply-To: <20250616-rk3588-csi-dphy-v1-3-84eb3b2a736c@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250617_023019_135492_9E42A2C8 X-CRM114-Status: GOOD ( 17.31 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Neil Armstrong Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On 17/06/2025 10:54, Michael Riesch via B4 Relay wrote: > From: Michael Riesch > > The driver for the Rockchip MIPI CSI-2 DPHY uses GRF register offset > value 0 to sort out undefined registers. However, the RK3588 CSIDPHY GRF > this offset is perfectly fine (in fact, register 0 is the only one in > this register y > file). > Introduce a boolean variable to indicate valid registers and allow writes > to register 0. > > Signed-off-by: Michael Riesch > --- > drivers/phy/rockchip/phy-rockchip-inno-csidphy.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/phy/rockchip/phy-rockchip-inno-csidphy.c b/drivers/phy/rockchip/phy-rockchip-inno-csidphy.c > index 2ab99e1d47eb..75533d071025 100644 > --- a/drivers/phy/rockchip/phy-rockchip-inno-csidphy.c > +++ b/drivers/phy/rockchip/phy-rockchip-inno-csidphy.c > @@ -87,10 +87,11 @@ struct dphy_reg { > u32 offset; > u32 mask; > u32 shift; > + u8 valid; > }; > > #define PHY_REG(_offset, _width, _shift) \ > - { .offset = _offset, .mask = BIT(_width) - 1, .shift = _shift, } > + { .offset = _offset, .mask = BIT(_width) - 1, .shift = _shift, .valid = 1, } > > static const struct dphy_reg rk1808_grf_dphy_regs[] = { > [GRF_DPHY_CSIPHY_FORCERXMODE] = PHY_REG(RK1808_GRF_PD_VI_CON_OFFSET, 4, 0), > @@ -145,7 +146,7 @@ static inline void write_grf_reg(struct rockchip_inno_csidphy *priv, > const struct dphy_drv_data *drv_data = priv->drv_data; > const struct dphy_reg *reg = &drv_data->grf_regs[index]; > > - if (reg->offset) > + if (reg->valid) > regmap_write(priv->grf, reg->offset, > HIWORD_UPDATE(value, reg->mask, reg->shift)); > } > Reviewed-by: Neil Armstrong -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy