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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?BIaF6a89edY6OXfSl4qKLqEqKOTW2DD+zTiKbJX9CDiW69y96wYPc9lVE7EI?= =?us-ascii?Q?8t1yoV0ih0SmPFyLs6dSYtW9bzud1Y+qDGxd21ds2kofeCLNjJkfiSni3xK4?= =?us-ascii?Q?VAt+9k6D9AbEAyHOuc2ia5E7hYSsgQW/m4lz2GMWaFf88QdzOGGCg32RHapp?= =?us-ascii?Q?Graq8RU5UkHtCudn4xowhMfsL01964chyDiqRTCUyK4pOaHUod9lB2nKbYYk?= =?us-ascii?Q?izWCLWMuSSbWhBHe6HwAbTK6cHZ4GPjz+oueyYIWzRLgZYjFBtVaq+F2xIA7?= =?us-ascii?Q?nxUlTTGo/zyMXWNTaqYTWHMtXXyyqo1wulUxN3Tu6xfuYvjCTyGR+RJcUeTt?= =?us-ascii?Q?+DtEVz8+ubw2hAXS8sciajr53CYyshoPzXlsHiej/TdGWR2f4CzyFP2sZn14?= =?us-ascii?Q?eJC+mxqfZGFpMSBBwE5yoq9K+OY0Tl5+c/Bb9nxH/ngcRTh7f10oCtqb0A3a?= =?us-ascii?Q?iBRcSNoQHrfo/RcanWVwO78GRrBsxlyhwH+xK0HlfPE6zqalaJ+D2OjzXEV3?= =?us-ascii?Q?x4d6rAj07/nbg2AiF+CUvL+l7pf0kBl28abzJnWcWNtZl7ht0Vh8LUF/6wRX?= =?us-ascii?Q?CEdmDhv6zu6Xt55pYpPsO6vcrtPrSBJLQazbi4hJlPMptX5BcCKRfN4tMjeC?= =?us-ascii?Q?wjlBk8q2ED80jMetkNmyfwS+BC+jHNT2iAqcNjuqZHfKFZ3dJWm7CnrANqmO?= =?us-ascii?Q?MBASjCBI0ur0apzzzMT1H0T/yJqMSFx0na4u+umuIgahwhQL/dgfw2++YiDv?= =?us-ascii?Q?dftpGcMxneL4nCIeQJ8YYhObx8dKlqVvSX+WeyM0q08hx7OcX2dYZrsbM/Xc?= =?us-ascii?Q?Af8iERG/3EAU9WAHs//okPPnUGVw/P4oLxEhx4wjGFyQ10H/VKXmfc1PlfLy?= =?us-ascii?Q?rrZLaKsU0MAU3KBHCcvm7WWY54yKPSd6xNayMYbmQNjTkJqZdMC7qlOyAZZ0?= =?us-ascii?Q?mN9V6x7766LXPOP0Cd8mifMeh8aCZ2wuxtstMzYgYV8fuiahdq0vgPJRVZS9?= =?us-ascii?Q?h+9eEYFthr9z1UC7NguOJdCMLK7xm+HIR+feq+pxgWliSA8vTd1o+t/DqkMi?= =?us-ascii?Q?y8aas7HjOnj3RuyFI5RbQaMXeoVGh4Z9w5bd+mf2KgNqcgFoJzVQl/3uk+RQ?= =?us-ascii?Q?6gLLtcMCL0MdYMcjrTXFqnDBxqPQ96yIOrLJjqhUDt+Qxvk4xAQkbwDPKxsN?= =?us-ascii?Q?LzkFTYbQL6bYfjp8zOSUWXLq0qMKo15x8X5+eL/2xkzYRX8yQ58HNN1CReD8?= =?us-ascii?Q?8NjPNqEKyjPmgk+Edm9Q+oXp4ERaQRmMkKEIDanmUnFrzVbftCmb2X+BwKTc?= =?us-ascii?Q?ntdlb3q/PxUF9FRxRCI3sDjixe4BUFMy/Yznr2MykPOxO7tZ8xAj4eLjxhPo?= =?us-ascii?Q?eBaERZhQx1TgfKkmaUU5ZyrwzlWcsYaiIzGlRhXI3ZnuD5iQaHcpQC9phfOD?= =?us-ascii?Q?odC8+wFQba0YhCR/LMw+p1IDm/XH4EFBRLC2GhSFlR7al1AIl7KlH+x36jDm?= =?us-ascii?Q?TwakUJ02cp/GMV1fz5ckSewvznP25NgvPQTnG2+IZSZxR/82r91ZbITYai73?= =?us-ascii?Q?L+9w/FEHaMuOGW2RfZZA/Mta9KvxyYmH0GosbboqDHy3nfW1LlP2ZrJpDg7X?= =?us-ascii?Q?Rbw5c6LM6QFaMqJjCAOAeZrBuW4fPuVBxDFIcCLHQnMAefRFCPj6cQNPITdm?= =?us-ascii?Q?mBQTlFT5TrE8Pu35UedHYAkgIp3r3KDBOFU2Y+4buLXNX3XwVaLhIP9trWrp?= =?us-ascii?Q?M44/0hpdyQ=3D=3D?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: da5d15d0-f462-4d42-0bce-08da194b2d48 X-MS-Exchange-CrossTenant-AuthSource: DB7PR04MB5450.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Apr 2022 10:33:10.1784 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: tHglaFb8Yu/+uzmh1p01YFcNY9GFdUhs8Cfq8Cc/HC2YaBAyGkomZuFVKCk8ftK5GfNB6yj8ztXlmJWjHs5T6w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR0402MB3405 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org i.MX8MPlus (v2.13a) has verified need the workaround to clear the overflow with one iteration. Only i.MX6Q(v1.30a) need the workaround with 4 iterations, the others versions later than v1.3a have been identified as needing the workaround with a single iteration. Default enable the workaround with one iteration for all versions later than v1.30a. Signed-off-by: Sandor Yu --- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 23 +++++++---------------- 1 file changed, 7 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index 4befc104d220..02d8f7e08814 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -2086,30 +2086,21 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi) * then write one of the FC registers several times. * * The number of iterations matters and depends on the HDMI TX revision - * (and possibly on the platform). So far i.MX6Q (v1.30a), i.MX6DL - * (v1.31a) and multiple Allwinner SoCs (v1.32a) have been identified - * as needing the workaround, with 4 iterations for v1.30a and 1 - * iteration for others. - * The Amlogic Meson GX SoCs (v2.01a) have been identified as needing - * the workaround with a single iteration. - * The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have - * been identified as needing the workaround with a single iteration. + * (and possibly on the platform). + * 4 iterations for i.MX6Q(v1.30a) and 1 iteration for others. + * i.MX6DL (v1.31a), Allwinner SoCs (v1.32a), Rockchip RK3288 SoC (v2.00a), + * Amlogic Meson GX SoCs (v2.01a), RK3328/RK3399 SoCs (v2.11a) + * and i.MX8MPlus (v2.13a) have been identified as needing the workaround + * with a single iteration. */ switch (hdmi->version) { case 0x130a: count = 4; break; - case 0x131a: - case 0x132a: - case 0x200a: - case 0x201a: - case 0x211a: - case 0x212a: + default: count = 1; break; - default: - return; } /* TMDS software reset */ -- 2.25.1 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 C329CC433FE for ; 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Only i.MX6Q(v1.30a) need the workaround with 4 iterations, the others versions later than v1.3a have been identified as needing the workaround with a single iteration. Default enable the workaround with one iteration for all versions later than v1.30a. Signed-off-by: Sandor Yu --- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 23 +++++++---------------- 1 file changed, 7 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index 4befc104d220..02d8f7e08814 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -2086,30 +2086,21 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi) * then write one of the FC registers several times. * * The number of iterations matters and depends on the HDMI TX revision - * (and possibly on the platform). So far i.MX6Q (v1.30a), i.MX6DL - * (v1.31a) and multiple Allwinner SoCs (v1.32a) have been identified - * as needing the workaround, with 4 iterations for v1.30a and 1 - * iteration for others. - * The Amlogic Meson GX SoCs (v2.01a) have been identified as needing - * the workaround with a single iteration. - * The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have - * been identified as needing the workaround with a single iteration. + * (and possibly on the platform). + * 4 iterations for i.MX6Q(v1.30a) and 1 iteration for others. + * i.MX6DL (v1.31a), Allwinner SoCs (v1.32a), Rockchip RK3288 SoC (v2.00a), + * Amlogic Meson GX SoCs (v2.01a), RK3328/RK3399 SoCs (v2.11a) + * and i.MX8MPlus (v2.13a) have been identified as needing the workaround + * with a single iteration. */ switch (hdmi->version) { case 0x130a: count = 4; break; - case 0x131a: - case 0x132a: - case 0x200a: - case 0x201a: - case 0x211a: - case 0x212a: + default: count = 1; break; - default: - return; } /* TMDS software reset */ -- 2.25.1