Message ID | 20190325141824.21259-2-narmstrong@baylibre.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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[176.150.251.154]) by smtp.gmail.com with ESMTPSA id 132sm26976794wmd.30.2019.03.25.07.18.27 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 25 Mar 2019 07:18:27 -0700 (PDT) From: Neil Armstrong <narmstrong@baylibre.com> To: dri-devel@lists.freedesktop.org Subject: [PATCH 01/11] drm/meson: Switch PLL to 5.94GHz base for 297Mhz pixel clock Date: Mon, 25 Mar 2019 15:18:14 +0100 Message-Id: <20190325141824.21259-2-narmstrong@baylibre.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190325141824.21259-1-narmstrong@baylibre.com> References: <20190325141824.21259-1-narmstrong@baylibre.com> MIME-Version: 1.0 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=52hJFpx6eea8OG1nyjqevGtis1G8l6iyh9Mvzmr0/WY=; b=ZZd5Ns675Fv7SdJvWPaG+nkFLB2qG19pTCqrUmN9Jxk3tnH41x+ixgP+zSAyKAsAvh 15E1gu1hZ1S2P61LZ3KO5SNr40sI83/YhN5R2VYBnj4a9BuReS3zA2h3TWi9OUnBKAKN 9acAdQRbl/JUWBCWRYdeMCbVn/eUgbAMPLIdY1yp3FortWoR8BxRSCNNLj9oOQlIYdd2 I6OJfcvZhSOgA+8KTj/dgvx0hifNnl+8LlPyGDBK+gFctxwLc6sMQN21RnFR8M+u/ocl SORKNC1Pw/aMyHyVCmOAsQ97wWO0JBf5/1vAbDkaXwoCEpSNKPUc3w+t8aAl3zlD40ma g4vA== X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development <dri-devel.lists.freedesktop.org> List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/dri-devel>, <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe> List-Archive: <https://lists.freedesktop.org/archives/dri-devel> List-Post: <mailto:dri-devel@lists.freedesktop.org> List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help> List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/dri-devel>, <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe> Cc: linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org, Neil Armstrong <narmstrong@baylibre.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org> X-Virus-Scanned: ClamAV using ClamSMTP |
Series |
drm/meson: Add G12A Support
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diff --git a/drivers/gpu/drm/meson/meson_vclk.c b/drivers/gpu/drm/meson/meson_vclk.c index f6ba35a405f8..c15a5a5df633 100644 --- a/drivers/gpu/drm/meson/meson_vclk.c +++ b/drivers/gpu/drm/meson/meson_vclk.c @@ -396,8 +396,8 @@ struct meson_vclk_params { }, [MESON_VCLK_HDMI_297000] = { .pixel_freq = 297000, - .pll_base_freq = 2970000, - .pll_od1 = 1, + .pll_base_freq = 5940000, + .pll_od1 = 2, .pll_od2 = 1, .pll_od3 = 1, .vid_pll_div = VID_PLL_DIV_5,
On Amlogic G12A SoC, the 2,97GHz PLL frequency is not stable enough to provide a correct 297MHz pixel clock, so switch the PLL base frequency with a /2 OD when the 297MHz pixel clock is requested. This solves the issue on G12A and also works fine on GXBB, GXL & GXM. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> --- drivers/gpu/drm/meson/meson_vclk.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)