From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbguseast2.qq.com (smtpbguseast2.qq.com [54.204.34.130]) (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 37CEB17B50F for ; Wed, 12 Aug 2026 07:31:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.204.34.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786519914; cv=none; b=M76MADyYEGT4ijP/mVsgwREx2zpGCdjMSaxIi6MEWP9038P6Q/dFQPnfV1fA7A9n8W4rhz1X2kDl2a1GGQSo1kFRW1GT/YXamxp4WQTu1+N3luOHl2ThvPltEba8E3dzZX/rZI3njnjVMvSzM69ASz3km5dZWJUAccanA5HBlHc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786519914; c=relaxed/simple; bh=JePUkAW2PbWipZehMSdW5thPXYhq6h4z5YZ7ei2KyCY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=rkZcdMC7u+UeCLSsTuWopaAhJ6FcNI2T01SPR7HqvQGGBvargYFF1KCWsZAHW3FE47Uv+tVPBsNIPyqwP3Y97B2W0y67n5CIOvSptqLw9zMSirMVdjUxDOX8oUR5aafUh2yPA7b6qLewApVi0hKh15v/2CFAZd8Px9Gc5l7Ix24= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=airkyi.com; spf=pass smtp.mailfrom=airkyi.com; dkim=pass (1024-bit key) header.d=airkyi.com header.i=@airkyi.com header.b=pGU7+GLg; arc=none smtp.client-ip=54.204.34.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=airkyi.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=airkyi.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=airkyi.com header.i=@airkyi.com header.b="pGU7+GLg" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1786519821; bh=hdB9ZEs4Q4RuH4r3lqNZ9fprVS/0wKCGmZXX0HdNJ5g=; h=From:To:Subject:Date:Message-Id; b=pGU7+GLg82pVlmH4xrKuzeDapMJTA502UFkJLJZ/RUpKqEZR+VIX7MvEc1KxNpPKr yEx8qw2Ynh2JG1csJhvpB2pNNEiD8rFvZqERQabdaHX3welN1r+hYTedoB9kfECie3 8Ql50K0hT1/KjIBDkGFBr2Yg2LUlsu29rfMInkvI= X-QQ-mid: esmtpsz11t1786519819t61391391 X-QQ-Originating-IP: NFMnSnCm7ZV5Cgwrkeb8TpF9vAHc9hb9n2Q5jHP7+L4= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Wed, 12 Aug 2026 15:30:13 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 8596351136751817460 From: Chaoyi Chen To: Sandy Huang , =?UTF-8?q?Heiko=20St=C3=BCbner?= , Andy Yan , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Cc: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Chaoyi Chen Subject: [PATCH v4 2/3] drm/rockchip: dsi: Add dphy_get_timing support for multiple PHY types Date: Wed, 12 Aug 2026 15:30:01 +0800 Message-Id: <20260812073002.328-3-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260812073002.328-1-kernel@airkyi.com> References: <20260812073002.328-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: OaeBaVXaJN9DeH333aEmqn5jUWk9qqp9VW6WDXiJy5bgCFy/R8gvtA2U Q7ipVoSjaSzkCMnROTr2WKJqVKtU5ESFzELVJSxhyktK5U6mKVNfXCzaErsJ3yH1DfIwpDI voco3//0G3NOjGjyg1UmE7DAoKr5z25LzVoLReE6CYfednLA8FTKl5WOdMpti2sa7ngZxjl i8CdbnjqqjWIxt+bFonOiK+fz+NTsmK5ChVXNjoXl4gg/TLEYdBOPKMA0LXdVsjoZgPpV34 QM21dfLCAzjIohmEgfz7xmwqNHs3pRT/hSTM2mYKAdnWEKQA2vw2RQWW+cKUA5gVcUWpkDF dtrfXObyVtJJg+8M3OkotUJ9EIokQkWdK3LGg4z1nDR7JKoqHTQdxmYFAhNMJ8VDJJ/Eeuv n7hHt9wYcW5OWOqgEUJJ68hL7TT9Z4cqh+uwREqLFPoOph2oFcsuIlYaSBFyVweRr1DMqWe dE0J0cOGM7a1cBmReEqtBbXU0AOFAYNJ2adwtZLUFtamw4FWwzaN0LBIl+Hw8l94e8pX2Zm oGT3VDEuscqJDXkbNW9ekOJq2hde8iO5PZG0/UwVJzK1gxBlrWqRsJsOVepsk7o2/Poeq5x nHX/MnuXcIVFBpO73FGft4qNYvCJgMqxvTdd79yuCG0+AOA1tvg/Jcl2+7IphTg3QgaGzA3 jj/vQ8l1V8JGDTUpXnbYBe605MJp5XzKhjJjc0C9hTX+9y57r/v2Z3DZ70ntShtgNr8WDn7 WtjsrH7kHfjzNGP1XpQvlKCd92XPjzEXLaFFktwI9O66pxz4VhEERJ/e/4Koy9LoZJGXioU SMZ6l51bL+hchvknhTha1bQhm6z1P7jj9rGMjYOHc21a7kZGDwe4Cqv8HI5Uj00mDr/mS/+ q8zK0czvkR7NOZdAekZ2xmbS4MYYxVDJzVtagSd2kahsrDCYlDuliGf66cty8APhlt/dvlm R1w0SVdfmMjFMAtVRb8tyI520jLQDPYZtXZgoSZ2AfSOwmSLWfGqYj0C2N1yuSlaMvT0xyP gru6QW8+FVPG0nbdA3QsF7D6FebR7PwK2LGCTCm2p+zYg4ZKTc X-QQ-XMRINFO: Nq+8W0+stu50tPAe92KXseR0ZZmBTk3gLg== X-QQ-RECHKSPAM: 0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Chaoyi Chen Currently, there are generally two types of DPHY for Rockchip. One is the DPHY used by RK3288/RK3399, whose timing is described by Table A-3 High-Speed Transition Times in the databook. The other is the DPHY used by PX30 and its successors. If its timing is still described using RK3288/RK3399, it may not perform correctly on some DSI panel. Add dphy_get_timing for different D-PHY types to adapt to timing differences. The configuration details are as follows: - RK3288/RK3399: Select the corresponding entry from the timing table based on the data rate. - PX30 and later platforms: Use a fixed timing configuration. Signed-off-by: Chaoyi Chen --- Changes in v4: - Add missing RK3506 timing and the fallback path for get_timing (sashiko). Changes in v3: - Rebase to Linux v7.2 Changes in v2: - Add more comment about timing config. --- .../gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 49 ++++++++++++++++++- 1 file changed, 47 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c index 1060abec9f29..d183c82ef9bc 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c @@ -247,6 +247,7 @@ enum { BIASEXTR_127_7, }; +struct dw_mipi_dsi_rockchip; struct rockchip_dw_dsi_chip_data { u32 reg; @@ -262,6 +263,9 @@ struct rockchip_dw_dsi_chip_data { u32 lanecfg2_grf_reg; u32 lanecfg2; + int (*dphy_get_timing)(struct dw_mipi_dsi_rockchip *dsi, unsigned int lane_mbps, + struct dw_mipi_dsi_dphy_timing *timing); + int (*dphy_rx_init)(struct phy *phy); int (*dphy_rx_power_on)(struct phy *phy); int (*dphy_rx_power_off)(struct phy *phy); @@ -721,8 +725,9 @@ static struct hstt hstt_table[] = { }; static int -dw_mipi_dsi_phy_get_timing(void *priv_data, unsigned int lane_mbps, - struct dw_mipi_dsi_dphy_timing *timing) +dw_mipi_dsi_phy_rk3288_get_timing(struct dw_mipi_dsi_rockchip *dsi, + unsigned int lane_mbps, + struct dw_mipi_dsi_dphy_timing *timing) { int i; @@ -738,6 +743,35 @@ dw_mipi_dsi_phy_get_timing(void *priv_data, unsigned int lane_mbps, return 0; } +static const struct dw_mipi_dsi_dphy_timing dphy_timing_px30 = { + .clk_lp2hs = 0x40, + .clk_hs2lp = 0x40, + .data_lp2hs = 0x10, + .data_hs2lp = 0x14, +}; + +static int +dw_mipi_dsi_phy_px30_get_timing(struct dw_mipi_dsi_rockchip *dsi, + unsigned int lane_mbps, + struct dw_mipi_dsi_dphy_timing *timing) +{ + *timing = dphy_timing_px30; + + return 0; +} + +static int +dw_mipi_dsi_phy_get_timing(void *priv_data, unsigned int lane_mbps, + struct dw_mipi_dsi_dphy_timing *timing) +{ + struct dw_mipi_dsi_rockchip *dsi = priv_data; + + if (dsi->cdata->dphy_get_timing) + return dsi->cdata->dphy_get_timing(dsi, lane_mbps, timing); + + return dw_mipi_dsi_phy_px30_get_timing(dsi, lane_mbps, timing); +} + static const struct dw_mipi_dsi_phy_ops dw_mipi_dsi_rockchip_phy_ops = { .init = dw_mipi_dsi_phy_init, .power_on = dw_mipi_dsi_phy_power_on, @@ -1506,6 +1540,7 @@ static const struct rockchip_dw_dsi_chip_data px30_chip_data[] = { .max_data_lanes = 4, .max_bit_rate_per_lane = 1000000000UL, + .dphy_get_timing = dw_mipi_dsi_phy_px30_get_timing, }, { /* sentinel */ } }; @@ -1519,6 +1554,7 @@ static const struct rockchip_dw_dsi_chip_data rk3128_chip_data[] = { RK3128_DSI_FORCETXSTOPMODE), 0), .max_data_lanes = 4, .max_bit_rate_per_lane = 1000000000UL, + .dphy_get_timing = dw_mipi_dsi_phy_px30_get_timing, }, { /* sentinel */ } }; @@ -1532,6 +1568,7 @@ static const struct rockchip_dw_dsi_chip_data rk3288_chip_data[] = { .max_data_lanes = 4, .max_bit_rate_per_lane = 1500000000UL, + .dphy_get_timing = dw_mipi_dsi_phy_rk3288_get_timing, }, { .reg = 0xff964000, @@ -1541,6 +1578,7 @@ static const struct rockchip_dw_dsi_chip_data rk3288_chip_data[] = { .max_data_lanes = 4, .max_bit_rate_per_lane = 1500000000UL, + .dphy_get_timing = dw_mipi_dsi_phy_rk3288_get_timing, }, { /* sentinel */ } }; @@ -1554,6 +1592,7 @@ static const struct rockchip_dw_dsi_chip_data rk3368_chip_data[] = { RK3368_DSI_FORCERXMODE), 0), .max_data_lanes = 4, .max_bit_rate_per_lane = 1500000000UL, + .dphy_get_timing = dw_mipi_dsi_phy_px30_get_timing, }, { /* sentinel */ } }; @@ -1642,6 +1681,7 @@ static const struct rockchip_dw_dsi_chip_data rk3399_chip_data[] = { .flags = DW_MIPI_NEEDS_PHY_CFG_CLK | DW_MIPI_NEEDS_GRF_CLK, .max_data_lanes = 4, .max_bit_rate_per_lane = 1500000000UL, + .dphy_get_timing = dw_mipi_dsi_phy_rk3288_get_timing, }, { .reg = 0xff968000, @@ -1671,6 +1711,7 @@ static const struct rockchip_dw_dsi_chip_data rk3399_chip_data[] = { .dphy_rx_init = rk3399_dphy_tx1rx1_init, .dphy_rx_power_on = rk3399_dphy_tx1rx1_power_on, .dphy_rx_power_off = rk3399_dphy_tx1rx1_power_off, + .dphy_get_timing = dw_mipi_dsi_phy_rk3288_get_timing, }, { /* sentinel */ } }; @@ -1684,6 +1725,7 @@ static const struct rockchip_dw_dsi_chip_data rk3506_chip_data[] = { FIELD_PREP_WM16_CONST(RK3506_DSI_FORCETXSTOPMODE, 0)), .max_data_lanes = 2, .max_bit_rate_per_lane = 1500000000UL, + .dphy_get_timing = dw_mipi_dsi_phy_px30_get_timing, }, { /* sentinel */ } }; @@ -1698,6 +1740,7 @@ static const struct rockchip_dw_dsi_chip_data rk3568_chip_data[] = { FIELD_PREP_WM16_CONST(RK3568_DSI0_FORCERXMODE, 0)), .max_data_lanes = 4, .max_bit_rate_per_lane = 1200000000UL, + .dphy_get_timing = dw_mipi_dsi_phy_px30_get_timing, }, { .reg = 0xfe070000, @@ -1708,6 +1751,7 @@ static const struct rockchip_dw_dsi_chip_data rk3568_chip_data[] = { FIELD_PREP_WM16_CONST(RK3568_DSI1_FORCERXMODE, 0)), .max_data_lanes = 4, .max_bit_rate_per_lane = 1200000000UL, + .dphy_get_timing = dw_mipi_dsi_phy_px30_get_timing, }, { /* sentinel */ } }; @@ -1721,6 +1765,7 @@ static const struct rockchip_dw_dsi_chip_data rv1126_chip_data[] = { FIELD_PREP_WM16_CONST(RV1126_DSI_FORCETXSTOPMODE, 0)), .max_data_lanes = 4, .max_bit_rate_per_lane = 1000000000UL, + .dphy_get_timing = dw_mipi_dsi_phy_px30_get_timing, }, { /* sentinel */ } }; -- 2.53.0