From patchwork Wed Dec 14 12:58:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jagan Teki X-Patchwork-Id: 13073050 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 1DF3FC001B2 for ; Wed, 14 Dec 2022 13:00:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238476AbiLNNA1 (ORCPT ); Wed, 14 Dec 2022 08:00:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59880 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238439AbiLNNAP (ORCPT ); Wed, 14 Dec 2022 08:00:15 -0500 Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1D99513F01 for ; Wed, 14 Dec 2022 05:00:14 -0800 (PST) Received: by mail-pj1-x102f.google.com with SMTP id z8-20020a17090abd8800b00219ed30ce47so7053955pjr.3 for ; Wed, 14 Dec 2022 05:00:14 -0800 (PST) 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:subject:date :message-id:reply-to; bh=mb1nxdVLVqjQupqttT8Xu0fM/Can5U2rIfAM94zt0R0=; b=RNWzCrgwHE/mtNlK6LhbNfbiPRJPG7tOVmcVfxib12N9RasZ6s31mbny+AykNyc/I8 HHoSLF8EFGjj1sLCONZTD7tF4A3d+qarlPMJVkq6ZgYwH77ZWI8fyV6VIy8arJRkBe+j 6J1nLhSpBx7d3bVEWpCI9h3eUH+Npnq4wkGPc= 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 :subject:date:message-id:reply-to; bh=mb1nxdVLVqjQupqttT8Xu0fM/Can5U2rIfAM94zt0R0=; b=Z6aC6TgSahy2b9+h7qFeGTiroL/oYMxYYks6zL4xCzDj4dyqsR72j9Ob6cv2f1Eb6w ayAxQgtBXPpYIYAF9Pmj/Dtf3DqiTDKWNGn8bUaTV5ytgah1LhIxpAHdKQIaXx6g39v1 hd6KgkZ9FayfTQYKbgsCDCu031G+iXvJSvw6O4anY4F1Mh2SpIplzifdvC25L9x9p4VW +V7sKfdLoyTRM0JYJEQ8MAP7Mz/lXhwcg2KCBXi94qJG3eQvrTiU/vAyp/zltQKWAhtU mT7TT9RrmQlDJPS99efhMwtflzBWTIUQ/T9lyr/9ckaE9FCK2WTHwIs8a6+Pt1m6LYUU mSXQ== X-Gm-Message-State: ANoB5pkwugYeKtVRkWiDx6dnxDrDMGtQrh6r5Ik2KbVYQmo3IK9mXt8a jGoumWSRYiD8q8/yU8+pymQLVw== X-Google-Smtp-Source: AA0mqf70Rk+oeItijPKStAOupMivRa++O289nvVNAZ4l8+0/HkEYrCoqd6ZB9kX7y2eQ6UpCTrYz9Q== X-Received: by 2002:a17:902:e194:b0:189:aab9:cd80 with SMTP id y20-20020a170902e19400b00189aab9cd80mr20942466pla.64.1671022813531; Wed, 14 Dec 2022 05:00:13 -0800 (PST) Received: from localhost.localdomain ([2405:201:c00a:a809:5e03:faf:846e:352d]) by smtp.gmail.com with ESMTPSA id ix17-20020a170902f81100b001895f7c8a71sm1838651plb.97.2022.12.14.05.00.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Dec 2022 05:00:12 -0800 (PST) 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 Cc: Matteo Lisi , dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, NXP Linux Team , linux-amarula , Jagan Teki Subject: [PATCH v10 06/18] drm: exynos: dsi: Add platform PLL_P (PMS_P) offset Date: Wed, 14 Dec 2022 18:28:55 +0530 Message-Id: <20221214125907.376148-7-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221214125907.376148-1-jagan@amarulasolutions.com> References: <20221214125907.376148-1-jagan@amarulasolutions.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Look like PLL PMS_P offset value varies between platforms that have Samsung DSIM IP. However, there is no clear evidence for it as both Exynos and i.MX 8M Mini Application Processor Reference Manual is still referring the PMS_P offset as 13. The offset 13 is not working for i.MX8M Mini SoCs but the downstream NXP sec-dsim.c driver is using offset 14 for i.MX8M Mini SoC platforms [1] [2]. PMS_P value set in sec_mipi_dsim_check_pll_out using PLLCTRL_SET_P() with offset 13 and then an additional offset of one bit added in sec_mipi_dsim_config_pll via PLLCTRL_SET_PMS(). Not sure whether it is reference manual documentation or something else but this patch trusts the downstream code and handle PLL_P offset via platform driver data so-that imx8mm driver data shall use pll_p_offset to 14. Similar to Mini the i.MX8M Nano/Plus also has P=14, unlike Exynos. [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#n210 [2] 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 Reviewed-by: Marek Vasut Signed-off-by: Frieder Schrempf Signed-off-by: Jagan Teki --- Changes for v10, v9: - none Changes for v8: - updated commit message for 8M Nano/Plus Changes for v7, v6: - none Changes for v5: - updated clear commit message Changes for v4, v3, v2: - none Changes for v1: - updated commit message - add downstream driver link drivers/gpu/drm/exynos/exynos_drm_dsi.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 5918d31127aa..7a845badb1b2 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -194,7 +194,7 @@ /* 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) @@ -263,6 +263,7 @@ struct exynos_dsi_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; }; @@ -471,6 +472,7 @@ static const struct exynos_dsi_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, }; @@ -483,6 +485,7 @@ static const struct exynos_dsi_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, }; @@ -493,6 +496,7 @@ static const struct exynos_dsi_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, }; @@ -504,6 +508,7 @@ static const struct exynos_dsi_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, }; @@ -515,6 +520,7 @@ static const struct exynos_dsi_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, }; @@ -628,7 +634,8 @@ static unsigned long exynos_dsi_set_pll(struct exynos_dsi *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[] = {