From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6C5102F12CE for ; Mon, 27 Oct 2025 16:24:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761582291; cv=none; b=BaQGRJCblmYi1aDUdQaaczit85VF+GshkCuoUYZ2HT7yQU24nAdNywBatqNxXv0+ZzixmVgOwK2WPhb20xdCKmLlhFtGNFBsHHfqnEIduGa0DBbrmRbzZ5bXg/HziSgEe8H5TqpRzC88vHOHMXHb8H50Iv+p212z45PMVzGnhVc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761582291; c=relaxed/simple; bh=iFUNgXsnYA88I+eiduiUIs6MsVz6z/JWH9W3jdxReHE=; h=MIME-Version:References:In-Reply-To:From:Date:Message-ID:Subject: To:Cc:Content-Type; b=J8OVFQTwaairst4WmpaNyDaOAOFjNlrdHiP7Xsk4T2/HuhTqIfGgcSJjYzVd1xYCsQY7l/vhUZkOa2hEyxAxG328Qkh/YeE//4gXtH3AJjR+4YWR32dSfk+CIBsFm8tmVlZUCanTrL0FVpFWtgh4jUJqo62DKCDpAhftDvO5x4Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=upbFfh9c; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="upbFfh9c" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 234DFC116C6 for ; Mon, 27 Oct 2025 16:24:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761582291; bh=iFUNgXsnYA88I+eiduiUIs6MsVz6z/JWH9W3jdxReHE=; h=References:In-Reply-To:Reply-To:From:Date:Subject:To:Cc:From; b=upbFfh9cs0w560m5G42zUAqRYxPzCQhWJ3nOUwjD6MeOlDBIWPgR2G3a88oLebvnT ujk6tCfOjiUqdVgy2MFjKvN9rMWrXIN5316szN6mMd4+uAO0sLp53eAa8x2WovxYUA jxkiAu/00FklIY5zVMLZwqlAGkLcplG4IkbTAqj73DLth/o+LT4ZC333P15SGKcxjk xgrKa1lpY+9VJtRSx9RdhKoB/gIKqlvkASy/W7JdUeifItJSnyB4R1Qs+J/H0/GZF3 lLTaw30AqORCfJ+MkMFkyaZL3SVfAfD11Zee/TPOUWl0UAIy2Qx4wFs/swJJfCRylJ dcudLK20iB9bw== Received: by mail-io1-f50.google.com with SMTP id ca18e2360f4ac-9435969137aso259507839f.1 for ; Mon, 27 Oct 2025 09:24:51 -0700 (PDT) X-Forwarded-Encrypted: i=1; AJvYcCX1/IXtKgTGZot3KRJZxOTAIeWXwrFbSQpCLHOWipSL4+5M6laEeQb0QgQJMRagWT4zbFPiH53O8AEXFTw=@vger.kernel.org X-Gm-Message-State: AOJu0YzoEkqMSLBVTNHKyP5HdCUe+MJ4dvzVHsB7XYEnNw7dVMZZXqHw 0ajyy1FV2R+mVdEHoRIpzgErMnD10PNsTkffAokuGNCvd99gWeEQnXNWsO+0cyzRiRtP/N/ENZ0 u9l9GtzwzG8icHh/IAMGDwklr8U+NdJQ= X-Google-Smtp-Source: AGHT+IHHe/XtS2GG/wdvqgHvDv+nRF07AMUFFVC6D3jwE43Y2hKkIN+nB3wIPE0Qg88P86L2vzXtvE/tbccFLfpnpgo= X-Received: by 2002:a05:6e02:3f04:b0:430:c8ad:81d3 with SMTP id e9e14a558f8ab-4320f86b4f8mr8500885ab.30.1761582290543; Mon, 27 Oct 2025 09:24:50 -0700 (PDT) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20251012192330.6903-1-jernej.skrabec@gmail.com> <20251012192330.6903-10-jernej.skrabec@gmail.com> In-Reply-To: <20251012192330.6903-10-jernej.skrabec@gmail.com> Reply-To: wens@kernel.org From: Chen-Yu Tsai Date: Tue, 28 Oct 2025 00:24:25 +0800 X-Gmail-Original-Message-ID: X-Gm-Features: AWmQ_bmGka6WNi4gU3CVi9HH7uDknXm3j3l2W4WzjmEHbPbF7rcEUtNrr-KxlVo Message-ID: Subject: Re: [PATCH 09/30] drm/sun4i: vi layer: Write attributes in one go To: Jernej Skrabec Cc: mripard@kernel.org, maarten.lankhorst@linux.intel.com, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, samuel@sholland.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, Oct 13, 2025 at 3:23=E2=80=AFAM Jernej Skrabec wrote: > > It turns out that none of the VI channel registers were meant to be > read. Mostly it works fine but sometimes it returns incorrect values. > > Rework VI layer code to write all registers in one go to avoid reads. > > This rework will also allow proper code separation. > > Signed-off-by: Jernej Skrabec Reviewed-by: Chen-Yu Tsai