From patchwork Tue May 30 18:24:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luca Weiss X-Patchwork-Id: 686984 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B9ED2C7EE2F for ; Tue, 30 May 2023 18:25:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233428AbjE3SZe (ORCPT ); Tue, 30 May 2023 14:25:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54526 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233413AbjE3SZ3 (ORCPT ); Tue, 30 May 2023 14:25:29 -0400 Received: from mail.z3ntu.xyz (mail.z3ntu.xyz [128.199.32.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 13880F9; Tue, 30 May 2023 11:25:03 -0700 (PDT) Received: from [192.168.122.1] (84-115-214-73.cable.dynamic.surfer.at [84.115.214.73]) by mail.z3ntu.xyz (Postfix) with ESMTPSA id B52A8CFC43; Tue, 30 May 2023 18:24:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=z3ntu.xyz; s=z3ntu; t=1685471071; bh=rnv3mbRpScpgrIa7uhlioBc67H4h1mLQDF3YL9pvLZQ=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=kC5jDogkPQEBPz3ndzMhDpYTBcY8Cc/4A7Hyq/kffTYEFGrsua/T+KUpVXWB8wBzT HPbqcsnp2JZz1swgb/BJapvuvDZ/enZy3jqrJ1LAFVZ2VPLuElyrxqbeBBhfTvu2iR 8cMxi/iMOb67nUlq3KBTxjXmcsXZmkza9LCA6eTE= From: Luca Weiss Date: Tue, 30 May 2023 20:24:16 +0200 Subject: [PATCH v2 6/7] drm/msm/dsi: Add phy configuration for MSM8226 MIME-Version: 1.0 Message-Id: <20230308-msm8226-mdp-v2-6-e005b769ee28@z3ntu.xyz> References: <20230308-msm8226-mdp-v2-0-e005b769ee28@z3ntu.xyz> In-Reply-To: <20230308-msm8226-mdp-v2-0-e005b769ee28@z3ntu.xyz> To: ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org, Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Krishna Manikandan , Andy Gross , Bjorn Andersson , Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Luca Weiss X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=6897; i=luca@z3ntu.xyz; h=from:subject:message-id; bh=rnv3mbRpScpgrIa7uhlioBc67H4h1mLQDF3YL9pvLZQ=; b=owEBbQKS/ZANAwAIAXLYQ7idTddWAcsmYgBkdj9W/xWMtWP2NpPcoje4Jm9Rov5PF1ELb+BJk hDZDdwF9oaJAjMEAAEIAB0WIQQ5utIvCCzakboVj/py2EO4nU3XVgUCZHY/VgAKCRBy2EO4nU3X VqG9D/9fNrDvTyCrpYq0HNFrrS4afwRF/4T5hZMlA5mgXJr/gqjM1HPzErCXda4uBfeZOzk9J3m iooFTgdxMeFpbZffwtcylCqcNMlyQhithe2eBARwzUWJ+kHDeAz8YsWmtXRgVHGmvctyTCe3suI x1z+iK4ocJ+WOLAyziB0D1ctyDsfJl344WLQ0SLppYqyS5rr+0ul4PyPxmt9Wb4rEiu6UhAwbKx FfHk6DYqUucxPSV1fIN633YxN52O6UpfQffeuEGlbz7PfpIJtqAivRpBiQ7ULa94+dkfb423G71 29uSkndnJEHU6UWyat9VcmBO6QSp7tS4NxxEqNDjJk1F4JeP34JLnKA5/7F8KNYhNRJmNK1X0tv j6gqP3gdF96yV9nfbq/Lsyo2UvkTZw9MbJjPz1oFmSGvOWEylKPpkKTxIF6FwVGQ+spmoD4lrRx j+CuFzP7Di8WjTkzCRGaIyZTjp66HsGinTY/yIWHh0ZMFhxtk6/DC0vMr/ygvm2rnPfIQquQJke lCrWmJOV5EYVrKgUQ1af1DxJr3nIQru7FsTpFW+UaB1FpaHl+vhFySY3+fctM5hbyuTQDkV4Ibc m65TDGFsoo+8tLnM4MjRtNvQhYbRw3AVriWz6eIFQrYoIGk67wxZXdbtFzVG458vYjCoy/cYmJW FkVmEXCTLMyBG3Q== X-Developer-Key: i=luca@z3ntu.xyz; a=openpgp; fpr=BD04DA24C971B8D587B2B8D7FAF69CF6CD2D02CD Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org MSM8226 uses a modified PLL lock sequence compared to MSM8974, which is based on the function dsi_pll_enable_seq_m in the msm-3.10 kernel. Worth noting that the msm-3.10 downstream kernel also will try other sequences in case this one doesn't work, but during testing it has shown that the _m sequence succeeds first time also: .pll_enable_seqs[0] = dsi_pll_enable_seq_m, .pll_enable_seqs[1] = dsi_pll_enable_seq_m, .pll_enable_seqs[2] = dsi_pll_enable_seq_d, .pll_enable_seqs[3] = dsi_pll_enable_seq_d, .pll_enable_seqs[4] = dsi_pll_enable_seq_f1, .pll_enable_seqs[5] = dsi_pll_enable_seq_c, .pll_enable_seqs[6] = dsi_pll_enable_seq_e, We may need to expand this in the future. Signed-off-by: Luca Weiss --- drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 2 + drivers/gpu/drm/msm/dsi/phy/dsi_phy.h | 3 +- drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c | 97 ++++++++++++++++++++++++++++++ 3 files changed, 101 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c index bb09cbe8ff86..9d5795c58a98 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c @@ -541,6 +541,8 @@ static const struct of_device_id dsi_phy_dt_match[] = { .data = &dsi_phy_28nm_hpm_famb_cfgs }, { .compatible = "qcom,dsi-phy-28nm-lp", .data = &dsi_phy_28nm_lp_cfgs }, + { .compatible = "qcom,dsi-phy-28nm-8226", + .data = &dsi_phy_28nm_8226_cfgs }, #endif #ifdef CONFIG_DRM_MSM_DSI_20NM_PHY { .compatible = "qcom,dsi-phy-20nm", diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h index 7137a17ae523..8b640d174785 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h @@ -46,8 +46,9 @@ struct msm_dsi_phy_cfg { extern const struct msm_dsi_phy_cfg dsi_phy_28nm_hpm_cfgs; extern const struct msm_dsi_phy_cfg dsi_phy_28nm_hpm_famb_cfgs; extern const struct msm_dsi_phy_cfg dsi_phy_28nm_lp_cfgs; -extern const struct msm_dsi_phy_cfg dsi_phy_20nm_cfgs; +extern const struct msm_dsi_phy_cfg dsi_phy_28nm_8226_cfgs; extern const struct msm_dsi_phy_cfg dsi_phy_28nm_8960_cfgs; +extern const struct msm_dsi_phy_cfg dsi_phy_20nm_cfgs; extern const struct msm_dsi_phy_cfg dsi_phy_14nm_cfgs; extern const struct msm_dsi_phy_cfg dsi_phy_14nm_660_cfgs; extern const struct msm_dsi_phy_cfg dsi_phy_14nm_2290_cfgs; diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c index 4c1bf55c5f38..ceec7bb87bf1 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c @@ -37,6 +37,7 @@ /* v2.0.0 28nm LP implementation */ #define DSI_PHY_28NM_QUIRK_PHY_LP BIT(0) +#define DSI_PHY_28NM_QUIRK_PHY_8226 BIT(1) #define LPFR_LUT_SIZE 10 struct lpfr_cfg { @@ -377,6 +378,74 @@ static int dsi_pll_28nm_vco_prepare_hpm(struct clk_hw *hw) return ret; } +static int dsi_pll_28nm_vco_prepare_8226(struct clk_hw *hw) +{ + struct dsi_pll_28nm *pll_28nm = to_pll_28nm(hw); + struct device *dev = &pll_28nm->phy->pdev->dev; + void __iomem *base = pll_28nm->phy->pll_base; + u32 max_reads = 5, timeout_us = 100; + bool locked; + u32 val; + int i; + + DBG("id=%d", pll_28nm->phy->id); + + pll_28nm_software_reset(pll_28nm); + + /* + * PLL power up sequence. + * Add necessary delays recommended by hardware. + */ + dsi_phy_write(base + REG_DSI_28nm_PHY_PLL_CAL_CFG1, 0x34); + + val = DSI_28nm_PHY_PLL_GLB_CFG_PLL_PWRDN_B; + dsi_phy_write_udelay(base + REG_DSI_28nm_PHY_PLL_GLB_CFG, val, 200); + + val |= DSI_28nm_PHY_PLL_GLB_CFG_PLL_PWRGEN_PWRDN_B; + dsi_phy_write_udelay(base + REG_DSI_28nm_PHY_PLL_GLB_CFG, val, 200); + + val |= DSI_28nm_PHY_PLL_GLB_CFG_PLL_LDO_PWRDN_B; + val |= DSI_28nm_PHY_PLL_GLB_CFG_PLL_ENABLE; + dsi_phy_write_udelay(base + REG_DSI_28nm_PHY_PLL_GLB_CFG, val, 600); + + for (i = 0; i < 7; i++) { + /* DSI Uniphy lock detect setting */ + dsi_phy_write(base + REG_DSI_28nm_PHY_PLL_LKDET_CFG2, 0x0d); + dsi_phy_write_udelay(base + REG_DSI_28nm_PHY_PLL_LKDET_CFG2, + 0x0c, 100); + dsi_phy_write(base + REG_DSI_28nm_PHY_PLL_LKDET_CFG2, 0x0d); + + /* poll for PLL ready status */ + locked = pll_28nm_poll_for_ready(pll_28nm, + max_reads, timeout_us); + if (locked) + break; + + pll_28nm_software_reset(pll_28nm); + + /* + * PLL power up sequence. + * Add necessary delays recommended by hardware. + */ + dsi_phy_write_udelay(base + REG_DSI_28nm_PHY_PLL_PWRGEN_CFG, 0x00, 50); + + val = DSI_28nm_PHY_PLL_GLB_CFG_PLL_PWRDN_B; + val |= DSI_28nm_PHY_PLL_GLB_CFG_PLL_PWRGEN_PWRDN_B; + dsi_phy_write_udelay(base + REG_DSI_28nm_PHY_PLL_GLB_CFG, val, 100); + + val |= DSI_28nm_PHY_PLL_GLB_CFG_PLL_LDO_PWRDN_B; + val |= DSI_28nm_PHY_PLL_GLB_CFG_PLL_ENABLE; + dsi_phy_write_udelay(base + REG_DSI_28nm_PHY_PLL_GLB_CFG, val, 600); + } + + if (unlikely(!locked)) + DRM_DEV_ERROR(dev, "DSI PLL lock failed\n"); + else + DBG("DSI PLL Lock success"); + + return locked ? 0 : -EINVAL; +} + static int dsi_pll_28nm_vco_prepare_lp(struct clk_hw *hw) { struct dsi_pll_28nm *pll_28nm = to_pll_28nm(hw); @@ -471,6 +540,15 @@ static const struct clk_ops clk_ops_dsi_pll_28nm_vco_lp = { .is_enabled = dsi_pll_28nm_clk_is_enabled, }; +static const struct clk_ops clk_ops_dsi_pll_28nm_vco_8226 = { + .round_rate = dsi_pll_28nm_clk_round_rate, + .set_rate = dsi_pll_28nm_clk_set_rate, + .recalc_rate = dsi_pll_28nm_clk_recalc_rate, + .prepare = dsi_pll_28nm_vco_prepare_8226, + .unprepare = dsi_pll_28nm_vco_unprepare, + .is_enabled = dsi_pll_28nm_clk_is_enabled, +}; + /* * PLL Callbacks */ @@ -536,6 +614,8 @@ static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm, struct clk_hw **prov if (pll_28nm->phy->cfg->quirks & DSI_PHY_28NM_QUIRK_PHY_LP) vco_init.ops = &clk_ops_dsi_pll_28nm_vco_lp; + else if (pll_28nm->phy->cfg->quirks & DSI_PHY_28NM_QUIRK_PHY_8226) + vco_init.ops = &clk_ops_dsi_pll_28nm_vco_8226; else vco_init.ops = &clk_ops_dsi_pll_28nm_vco_hpm; @@ -820,3 +900,20 @@ const struct msm_dsi_phy_cfg dsi_phy_28nm_lp_cfgs = { .quirks = DSI_PHY_28NM_QUIRK_PHY_LP, }; +const struct msm_dsi_phy_cfg dsi_phy_28nm_8226_cfgs = { + .has_phy_regulator = true, + .regulator_data = dsi_phy_28nm_regulators, + .num_regulators = ARRAY_SIZE(dsi_phy_28nm_regulators), + .ops = { + .enable = dsi_28nm_phy_enable, + .disable = dsi_28nm_phy_disable, + .pll_init = dsi_pll_28nm_init, + .save_pll_state = dsi_28nm_pll_save_state, + .restore_pll_state = dsi_28nm_pll_restore_state, + }, + .min_pll_rate = VCO_MIN_RATE, + .max_pll_rate = VCO_MAX_RATE, + .io_start = { 0xfd922b00 }, + .num_dsi_phy = 1, + .quirks = DSI_PHY_28NM_QUIRK_PHY_8226, +};