From patchwork Mon Aug 29 18:40:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jagan Teki X-Patchwork-Id: 12958355 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 004A3ECAAD2 for ; Mon, 29 Aug 2022 18:42:17 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 21C4A10F6CE; Mon, 29 Aug 2022 18:42:16 +0000 (UTC) Received: from mail-pj1-x1029.google.com (mail-pj1-x1029.google.com [IPv6:2607:f8b0:4864:20::1029]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0595510F6CE for ; Mon, 29 Aug 2022 18:41:43 +0000 (UTC) Received: by mail-pj1-x1029.google.com with SMTP id l5so4988577pjy.5 for ; Mon, 29 Aug 2022 11:41:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc; bh=xMi0yFur/nA6QX+prP8Y5QXRtVTqBYGjaNwK4RB7jg8=; b=KLyBqgHkI7olBo1slJB6ivJuI0v0vR5rxy+Ndw2IV08ufTafgqjU+hf8M4Y89SS9bh FhwFWrQ1DYBK1zLCkUY6pQ7IOxPDKCY8xkLlKdi0nA5y4Pl9dKO3P5djTV7EgJT7iToL OFKtzEISGSPMCCmXuStBXaF1EJoK4XuAOP6Ss= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc; bh=xMi0yFur/nA6QX+prP8Y5QXRtVTqBYGjaNwK4RB7jg8=; b=Wy2MYyr4iYrUj3OrHug4OLh6ZS8z5eWIla/GvHLc/txc7jvD4zdRgUOTK9ejA8XvG9 2PQ6ih9dgMJkiNjnrA1WGJU62AMBRCZ7O6kfnrY9RN5j+ta9z0lUezybfyRT6LMgsRuN c9e12hiaKw0uJAZVa5TqVsP9KNMsdXoamAcrjk3Yq+f4oYfE/drIuSoRn4W9MUkoskCc eWXRe5wriU8hosHawT2KcieH3Qk/LWXqZzNdX1Sm8HBZfSYb+dndfa3XspUmKa0gkZF5 p1SdGa96pb36zcFdXcASAwXaVX/g5KVwTttAJnKRsnFQVleuJktozg9MGnPKypg++LA+ FzmQ== X-Gm-Message-State: ACgBeo2op4AAlNHOhfeFdNhaWH6Zj3DfVYGl0r6oczvnUurnXR+AOnXJ jQfcZJf/KJz76+YRY0EjD8hmZg== X-Google-Smtp-Source: AA6agR50WyCEtnMzshtbiOgRs+nYGM/4K9LXvfKjn77kyzgG+REX32KR/OiaDOzROGBS63pdkPvZ7Q== X-Received: by 2002:a17:902:dac8:b0:174:cf17:6e87 with SMTP id q8-20020a170902dac800b00174cf176e87mr5795736plx.129.1661798502540; Mon, 29 Aug 2022 11:41:42 -0700 (PDT) Received: from localhost.localdomain ([2405:201:c00a:a073:43f7:1644:6259:830d]) by smtp.gmail.com with ESMTPSA id k13-20020aa7998d000000b005385e2e86eesm1619042pfh.18.2022.08.29.11.41.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Aug 2022 11:41:42 -0700 (PDT) From: Jagan Teki To: Andrzej Hajda , Inki Dae , Marek Szyprowski , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , Frieder Schrempf , Fancy Fang , Tim Harvey , Michael Nazzareno Trimarchi , Adam Ford , Neil Armstrong , Robert Foss , Laurent Pinchart , Tommaso Merciai , Marek Vasut Subject: [PATCH v4 07/12] drm: bridge: samsung-dsim: Fix PLL_P (PMS_P) offset Date: Tue, 30 Aug 2022 00:10:26 +0530 Message-Id: <20220829184031.1863663-8-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220829184031.1863663-1-jagan@amarulasolutions.com> References: <20220829184031.1863663-1-jagan@amarulasolutions.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-samsung-soc@vger.kernel.org, Matteo Lisi , dri-devel@lists.freedesktop.org, NXP Linux Team , linux-amarula , linux-arm-kernel@lists.infradead.org, Jagan Teki Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The i.MX 8M Mini Applications Processor Reference Manual, Rev. 3, 11/2020 with 13.7.10.1 Master PLL PMS Value setting Register mentioned PMS_P offset range from BIT[18-13] and the upstream driver is using the same offset. However, offset 13 is not working on i.MX8M Mini platforms but downstream NXP driver is using 14 [1] and it is working with i.MX8M Mini SoC. Not sure about whether it is reference manual documentation or something else but this patch trusts the downstream code and fixes the PLL_P offset. [1] https://source.codeaurora.org/external/imx/linux-imx/tree/drivers/gpu/drm/bridge/sec-dsim.c?h=imx_5.4.47_2.2.0#n211 v4, v3, v2: * none v1: * updated commit message * add downstream driver link Signed-off-by: Frieder Schrempf Signed-off-by: Jagan Teki --- drivers/gpu/drm/bridge/samsung-dsim.c | 10 ++++++++-- include/drm/bridge/samsung-dsim.h | 1 + 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c index b6883a6d4681..b6d17c0c9e58 100644 --- a/drivers/gpu/drm/bridge/samsung-dsim.c +++ b/drivers/gpu/drm/bridge/samsung-dsim.c @@ -168,7 +168,7 @@ /* DSIM_PLLCTRL */ #define DSIM_FREQ_BAND(x) ((x) << 24) #define DSIM_PLL_EN (1 << 23) -#define DSIM_PLL_P(x) ((x) << 13) +#define DSIM_PLL_P(x, offset) ((x) << (offset)) #define DSIM_PLL_M(x) ((x) << 4) #define DSIM_PLL_S(x) ((x) << 1) @@ -368,6 +368,7 @@ static const struct samsung_dsim_driver_data exynos3_dsi_driver_data = { .max_freq = 1000, .wait_for_reset = 1, .num_bits_resol = 11, + .pll_p_offset = 13, .reg_values = reg_values, .quirks = DSIM_QUIRK_PLAT_DATA, }; @@ -381,6 +382,7 @@ static const struct samsung_dsim_driver_data exynos4_dsi_driver_data = { .max_freq = 1000, .wait_for_reset = 1, .num_bits_resol = 11, + .pll_p_offset = 13, .reg_values = reg_values, .quirks = DSIM_QUIRK_PLAT_DATA, }; @@ -392,6 +394,7 @@ static const struct samsung_dsim_driver_data exynos5_dsi_driver_data = { .max_freq = 1000, .wait_for_reset = 1, .num_bits_resol = 11, + .pll_p_offset = 13, .reg_values = reg_values, .quirks = DSIM_QUIRK_PLAT_DATA, }; @@ -404,6 +407,7 @@ static const struct samsung_dsim_driver_data exynos5433_dsi_driver_data = { .max_freq = 1500, .wait_for_reset = 0, .num_bits_resol = 12, + .pll_p_offset = 13, .reg_values = exynos5433_reg_values, .quirks = DSIM_QUIRK_PLAT_DATA, }; @@ -416,6 +420,7 @@ static const struct samsung_dsim_driver_data exynos5422_dsi_driver_data = { .max_freq = 1500, .wait_for_reset = 1, .num_bits_resol = 12, + .pll_p_offset = 13, .reg_values = exynos5422_reg_values, .quirks = DSIM_QUIRK_PLAT_DATA, }; @@ -563,7 +568,8 @@ static unsigned long samsung_dsim_set_pll(struct samsung_dsim *dsi, writel(driver_data->reg_values[PLL_TIMER], dsi->reg_base + driver_data->plltmr_reg); - reg = DSIM_PLL_EN | DSIM_PLL_P(p) | DSIM_PLL_M(m) | DSIM_PLL_S(s); + reg = DSIM_PLL_EN | DSIM_PLL_P(p, driver_data->pll_p_offset) | + DSIM_PLL_M(m) | DSIM_PLL_S(s); if (driver_data->has_freqband) { static const unsigned long freq_bands[] = { diff --git a/include/drm/bridge/samsung-dsim.h b/include/drm/bridge/samsung-dsim.h index e15fbfd49efe..95d3f89aec4f 100644 --- a/include/drm/bridge/samsung-dsim.h +++ b/include/drm/bridge/samsung-dsim.h @@ -47,6 +47,7 @@ struct samsung_dsim_driver_data { unsigned int max_freq; unsigned int wait_for_reset; unsigned int num_bits_resol; + unsigned int pll_p_offset; const unsigned int *reg_values; enum samsung_dsim_quirks quirks; };