From patchwork Sat Apr 11 07:44:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jitao Shi X-Patchwork-Id: 11484013 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5B53614DD for ; Sat, 11 Apr 2020 07:46:07 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 16A6B20732 for ; Sat, 11 Apr 2020 07:46:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="E1DfifX1"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="eY4Ajc6l" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 16A6B20732 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=9TUAamSTOv34uR8bY8gKfFrOI0wblZXFKcBfDpOVb0k=; b=E1DfifX1jgskKd QD8WQvdgj/elexbSuQzaoRGUaGEx9mJ2s/6CtU9nKVQjB+6Z0ToAW7nE9jr0WBzt6kITedWbUdX8F 01bzx7v6uglL3XDBr6Y7Qp8CcwEZctjvthSbxnV6XBEJDfpi1R71tTVDQVK+fkGPqphSR39TkTT4h rVhEK4lr2PVDXpixL7QI3qnzpDJ9XYldqKe9VUwghX1OAyeBW2ODvYo+Ivm8spWdtHplF5AtKl2cX IqqEcJcTu36OvQfVQcouAuM4O0kxFEAeYJmefQRevCtpBVkgA8TAj//kswcwWYPgvjOTSCqA7+1UE q3XDO4UhkcCVUDg/XTOQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jNAq2-0003Qn-Vj; Sat, 11 Apr 2020 07:46:02 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jNAoj-00086p-Je; Sat, 11 Apr 2020 07:44:42 +0000 X-UUID: b282d628fb9244f685179f65f835a7ce-20200410 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=oXyxi7IUgBNHR+VYtiCeIx+6ezK7zPDvVd2okeNBTBs=; b=eY4Ajc6lPfU6UoW6d+Zgyi8zWN6CEIVkaop2Eb0I4YNX1i8E+kxlL5OeFlEmVxZNscTTrraLVNIpIa3K2eLXQFE3Q0/MKnPBP0qR1m854F1ZXCubDeHJgeK2zXNdpVVZCgtIOn1Mm0Y5n8KI/MwI+SgW4eSDXODvKmm+1gatLQQ=; X-UUID: b282d628fb9244f685179f65f835a7ce-20200410 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1749055299; Fri, 10 Apr 2020 23:44:33 -0800 Received: from MTKMBS33N2.mediatek.inc (172.27.4.76) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 11 Apr 2020 00:44:31 -0700 Received: from MTKCAS36.mediatek.inc (172.27.4.186) by MTKMBS33N2.mediatek.inc (172.27.4.76) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 11 Apr 2020 15:44:26 +0800 Received: from mszsdclx1018.gcn.mediatek.inc (10.16.6.18) by MTKCAS36.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sat, 11 Apr 2020 15:44:23 +0800 From: Jitao Shi To: Rob Herring , Mark Rutland , Matthias Brugger , Daniel Vetter , David Airlie , , Subject: [PATCH v6 1/4] dt-bindings: display: mediatek: add property to control mipi tx drive current Date: Sat, 11 Apr 2020 15:44:05 +0800 Message-ID: <20200411074408.38090-2-jitao.shi@mediatek.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200411074408.38090-1-jitao.shi@mediatek.com> References: <20200411074408.38090-1-jitao.shi@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 0005373B2C71D73AF1CED7A230B00BB7B6A072EA461E12CD676996CB520C10192000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200411_004441_671474_7C61AA70 X-CRM114-Status: UNSURE ( 6.99 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [216.200.240.184 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Jitao Shi , srv_heupstream@mediatek.com, Chun-Kuang Hu , huijuan.xie@mediatek.com, stonea168@163.com, cawa.cheng@mediatek.com, linux-mediatek@lists.infradead.org, bibby.hsieh@mediatek.com, ck.hu@mediatek.com, yingjoe.chen@mediatek.com, eddie.huang@mediatek.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add a property to control mipi tx drive current: "drive-strength-microamp" Reviewed-by: Chun-Kuang Hu Signed-off-by: Jitao Shi Reviewed-by: Rob Herring --- .../devicetree/bindings/display/mediatek/mediatek,dsi.txt | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt index a19a6cc375ed..d78b6d6d8fab 100644 --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt @@ -33,6 +33,10 @@ Required properties: - #clock-cells: must be <0>; - #phy-cells: must be <0>. +Optional properties: +- drive-strength-microamp: adjust driving current, should be 3000 ~ 6000. And + the step is 200. + Example: mipi_tx0: mipi-dphy@10215000 { @@ -42,6 +46,7 @@ mipi_tx0: mipi-dphy@10215000 { clock-output-names = "mipi_tx0_pll"; #clock-cells = <0>; #phy-cells = <0>; + drive-strength-microamp = <4600>; }; dsi0: dsi@1401b000 { From patchwork Sat Apr 11 07:44:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jitao Shi X-Patchwork-Id: 11483997 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 035B5112C for ; Sat, 11 Apr 2020 07:44:47 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D50A02063A for ; Sat, 11 Apr 2020 07:44:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="hCCQp+Qf"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="rBI0rBbb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D50A02063A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Z/vSE+tOK9YgGd7rcU05DoON6by6S05YjGymCOjWsRc=; b=hCCQp+Qf+bNpxK CBXzG0vDZLvEJBhietG3XwI1ZSny1VIZZSzBajJnJFxMnDv1KuyyPEoxTOmQJHQE99/C4U/xbJTQj ahbEHVjPbIHa5kCxXy8q2snsBr+teZCACqCI0nskpqFgtvFvUjL8Dh61jR2A0dEE7nSXvBnP1dpSs sezrH68b0XOpgTG3+bmfZWSYuwvNRT/31aRaXKGkc+mTnjTHFp5IavEbIgAGPEDmq5aNCjIersLFh Ru90iAn+jHyrBUjIH/sSragrRkIB9DormKeDRWOwNCHDOV1VzW2U7OxllpssthOqcf+xT/4q+Z1p1 UW0gfZFyAIDxsL+tyI5Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jNAok-0008A5-Hn; Sat, 11 Apr 2020 07:44:42 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jNAog-00086p-Mv; Sat, 11 Apr 2020 07:44:40 +0000 X-UUID: 4fb5f90a952e4e1482dd177e76a1263a-20200410 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=iR0rPL64FU19qOW727A31bTZVI8PeoEj1NeCit81CAU=; b=rBI0rBbbrgS5oZTIk478/NoGMQpWw1FTo0Jm9EeHGxFaMXvD5IW1JLYK7PZYgS+zh63Nn7dsxZpJw1jwl3Brp324WcO+9vcEkVKBQrCm7ZSpO0UKgRmnLTQouV+Fel0yoO+EqIOwE8qAC3Y5LY5xcuhnLGXVw6OZwSpb2VKWkXA=; X-UUID: 4fb5f90a952e4e1482dd177e76a1263a-20200410 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 92068835; Fri, 10 Apr 2020 23:44:33 -0800 Received: from MTKMBS33N1.mediatek.inc (172.27.4.75) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 11 Apr 2020 00:44:32 -0700 Received: from MTKCAS36.mediatek.inc (172.27.4.186) by MTKMBS33N1.mediatek.inc (172.27.4.75) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 11 Apr 2020 15:44:26 +0800 Received: from mszsdclx1018.gcn.mediatek.inc (10.16.6.18) by MTKCAS36.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sat, 11 Apr 2020 15:44:24 +0800 From: Jitao Shi To: Rob Herring , Mark Rutland , Matthias Brugger , Daniel Vetter , David Airlie , , Subject: [PATCH v6 2/4] dt-bindings: display: mediatek: get mipitx calibration data from nvmem Date: Sat, 11 Apr 2020 15:44:06 +0800 Message-ID: <20200411074408.38090-3-jitao.shi@mediatek.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200411074408.38090-1-jitao.shi@mediatek.com> References: <20200411074408.38090-1-jitao.shi@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 3F5C87B68CD97C73DA1F90AAF118FD8FA8B79DD9371F8F179B5BB437835841A32000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200411_004438_759437_91E75191 X-CRM114-Status: UNSURE ( 7.80 ) X-CRM114-Notice: Please train this message. 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Reviewed-by: Chun-Kuang Hu Reviewed-by: Rob Herring Signed-off-by: Jitao Shi --- .../devicetree/bindings/display/mediatek/mediatek,dsi.txt | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt index d78b6d6d8fab..8e4729de8c85 100644 --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt @@ -36,6 +36,9 @@ Required properties: Optional properties: - drive-strength-microamp: adjust driving current, should be 3000 ~ 6000. And the step is 200. +- nvmem-cells: A phandle to the calibration data provided by a nvmem device. If + unspecified default values shall be used. +- nvmem-cell-names: Should be "calibration-data" Example: @@ -47,6 +50,8 @@ mipi_tx0: mipi-dphy@10215000 { #clock-cells = <0>; #phy-cells = <0>; drive-strength-microamp = <4600>; + nvmem-cells= <&mipi_tx_calibration>; + nvmem-cell-names = "calibration-data"; }; dsi0: dsi@1401b000 { From patchwork Sat Apr 11 07:44:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jitao Shi X-Patchwork-Id: 11484011 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 66FCF14DD for ; Sat, 11 Apr 2020 07:45:53 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 44E7E20857 for ; Sat, 11 Apr 2020 07:45:53 +0000 (UTC) Authentication-Results: mail.kernel.org; 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b=HANf0K7OwymCJmRC/RqCZPhcDTIdxnfUP1R+AltCBZ+zuN5FxTUZf1Jmq7SZPjEA64Zo7Cm6k0iEUn8EBIKXUwqgzRMevEGEe2dXimYWLCTinPY5dR0tTEszinZQr2Ky1efo4hfI5SOZBRm67ReyBFyIbpnhiWeE8oSeXfJmGKE=; X-UUID: 1e613bc07df74f098bbbf5fd338928f1-20200410 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 738955166; Fri, 10 Apr 2020 23:44:33 -0800 Received: from MTKMBS33DR.mediatek.inc (172.27.6.106) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 11 Apr 2020 00:44:32 -0700 Received: from MTKCAS36.mediatek.inc (172.27.4.186) by MTKMBS33DR.mediatek.inc (172.27.6.106) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 11 Apr 2020 15:44:28 +0800 Received: from mszsdclx1018.gcn.mediatek.inc (10.16.6.18) by MTKCAS36.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sat, 11 Apr 2020 15:44:25 +0800 From: Jitao Shi To: Rob Herring , Mark Rutland , Matthias Brugger , Daniel Vetter , David Airlie , , Subject: [PATCH v6 3/4] drm/mediatek: add the mipitx driving control Date: Sat, 11 Apr 2020 15:44:07 +0800 Message-ID: <20200411074408.38090-4-jitao.shi@mediatek.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200411074408.38090-1-jitao.shi@mediatek.com> References: <20200411074408.38090-1-jitao.shi@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: F585F1D0662B1E91FEA6FA77DF2A7867D88A48573C1192C85F33AC2D99FED72D2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200411_004440_277897_31198EEA X-CRM114-Status: GOOD ( 11.29 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [216.200.240.184 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Jitao Shi , srv_heupstream@mediatek.com, Chun-Kuang Hu , huijuan.xie@mediatek.com, stonea168@163.com, cawa.cheng@mediatek.com, linux-mediatek@lists.infradead.org, bibby.hsieh@mediatek.com, ck.hu@mediatek.com, yingjoe.chen@mediatek.com, eddie.huang@mediatek.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add a property in device tree to control the driving by different board. Reviewed-by: Chun-Kuang Hu Reviewed-by: Matthias Brugger Signed-off-by: Jitao Shi --- drivers/gpu/drm/mediatek/mtk_mipi_tx.c | 14 ++++++++++++++ drivers/gpu/drm/mediatek/mtk_mipi_tx.h | 1 + drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c | 7 +++++++ 3 files changed, 22 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c index e4d34484ecc8..e301af64809e 100644 --- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c +++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c @@ -125,6 +125,20 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev) return ret; } + ret = of_property_read_u32(dev->of_node, "drive-strength-microamp", + &mipi_tx->mipitx_drive); + /* If can't get the "mipi_tx->mipitx_drive", set it default 0x8 */ + if (ret < 0) + mipi_tx->mipitx_drive = 4600; + + /* check the mipitx_drive valid */ + if (mipi_tx->mipitx_drive > 6000 || mipi_tx->mipitx_drive < 3000) { + dev_warn(dev, "drive-strength-microamp is invalid %d, not in 3000 ~ 6000\n", + mipi_tx->mipitx_drive); + mipi_tx->mipitx_drive = clamp_val(mipi_tx->mipitx_drive, 3000, + 6000); + } + ref_clk_name = __clk_get_name(ref_clk); ret = of_property_read_string(dev->of_node, "clock-output-names", diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.h b/drivers/gpu/drm/mediatek/mtk_mipi_tx.h index 413f35d86219..eea44327fe9f 100644 --- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.h +++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.h @@ -27,6 +27,7 @@ struct mtk_mipi_tx { struct device *dev; void __iomem *regs; u32 data_rate; + u32 mipitx_drive; const struct mtk_mipitx_data *driver_data; struct clk_hw pll_hw; struct clk *pll; diff --git a/drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c index 91f08a351fd0..e4cc967750cb 100644 --- a/drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c +++ b/drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c @@ -17,6 +17,9 @@ #define RG_DSI_BG_CORE_EN BIT(7) #define RG_DSI_PAD_TIEL_SEL BIT(8) +#define MIPITX_VOLTAGE_SEL 0x0010 +#define RG_DSI_HSTX_LDO_REF_SEL (0xf << 6) + #define MIPITX_PLL_PWR 0x0028 #define MIPITX_PLL_CON0 0x002c #define MIPITX_PLL_CON1 0x0030 @@ -123,6 +126,10 @@ static void mtk_mipi_tx_power_on_signal(struct phy *phy) mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_D3_SW_CTL_EN, DSI_SW_CTL_EN); mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_CK_SW_CTL_EN, DSI_SW_CTL_EN); + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_VOLTAGE_SEL, + RG_DSI_HSTX_LDO_REF_SEL, + (mipi_tx->mipitx_drive - 3000) / 200 << 6); + mtk_mipi_tx_set_bits(mipi_tx, MIPITX_CK_CKMODE_EN, DSI_CK_CKMODE_EN); } From patchwork Sat Apr 11 07:44:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jitao Shi X-Patchwork-Id: 11484007 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DDE5E14DD for ; Sat, 11 Apr 2020 07:45:33 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B0ECC20732 for ; Sat, 11 Apr 2020 07:45:33 +0000 (UTC) Authentication-Results: mail.kernel.org; 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b=mL+jfjiho+ZbId8z+3DJ3Hy0SXHhfmso+RWzUGhHubKEFfdozV5tC7TTuE1TyStWiVKtynSjloaOKFdOLPB1BpYn9R8dYFqrgQqdVeH1R+U/buV/4Iye3HDfucW9+CCkSKXGFPXASsQ/RnTv8JKfz9X708EXkgbvBLOLES8PK84=; X-UUID: 6a765e40f207461b85d19bf70777564d-20200410 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 933355641; Fri, 10 Apr 2020 23:44:33 -0800 Received: from MTKMBS33N2.mediatek.inc (172.27.4.76) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 11 Apr 2020 00:44:32 -0700 Received: from MTKCAS36.mediatek.inc (172.27.4.186) by MTKMBS33N2.mediatek.inc (172.27.4.76) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 11 Apr 2020 15:44:29 +0800 Received: from mszsdclx1018.gcn.mediatek.inc (10.16.6.18) by MTKCAS36.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sat, 11 Apr 2020 15:44:27 +0800 From: Jitao Shi To: Rob Herring , Mark Rutland , Matthias Brugger , Daniel Vetter , David Airlie , , Subject: [PATCH v6 4/4] drm/mediatek: config mipitx impedance with calibration data Date: Sat, 11 Apr 2020 15:44:08 +0800 Message-ID: <20200411074408.38090-5-jitao.shi@mediatek.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200411074408.38090-1-jitao.shi@mediatek.com> References: <20200411074408.38090-1-jitao.shi@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: AFB922CAAE16CBA39DB068B9B2C548EFCE1B0533F1A41542C3961D0FDA54E06B2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200411_004440_259643_BEEFC13C X-CRM114-Status: GOOD ( 11.82 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [216.200.240.184 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Jitao Shi , srv_heupstream@mediatek.com, huijuan.xie@mediatek.com, stonea168@163.com, cawa.cheng@mediatek.com, linux-mediatek@lists.infradead.org, bibby.hsieh@mediatek.com, ck.hu@mediatek.com, yingjoe.chen@mediatek.com, eddie.huang@mediatek.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Read calibration data from nvmem, and config mipitx impedance with calibration data to make sure their impedance are 100ohm. Signed-off-by: Jitao Shi Reviewed-by: Chun-Kuang Hu --- drivers/gpu/drm/mediatek/mtk_mipi_tx.c | 40 +++++++++++++++++++ drivers/gpu/drm/mediatek/mtk_mipi_tx.h | 3 ++ drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c | 21 ++++++++++ 3 files changed, 64 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c index e301af64809e..8cee2591e728 100644 --- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c +++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c @@ -88,6 +88,44 @@ static const struct phy_ops mtk_mipi_tx_ops = { .owner = THIS_MODULE, }; +static void mtk_mipi_tx_get_calibration_datal(struct mtk_mipi_tx *mipi_tx) +{ + struct nvmem_cell *cell; + size_t len; + u32 *buf; + + cell = nvmem_cell_get(mipi_tx->dev, "calibration-data"); + if (IS_ERR(cell)) { + dev_info(mipi_tx->dev, "can't get nvmem_cell_get, ignore it\n"); + return; + } + buf = (u32 *)nvmem_cell_read(cell, &len); + nvmem_cell_put(cell); + + if (IS_ERR(buf)) { + dev_info(mipi_tx->dev, "can't get data, ignore it\n"); + return; + } + + if (len < 3 * sizeof(u32)) { + dev_info(mipi_tx->dev, "invalid calibration data\n"); + kfree(buf); + return; + } + + mipi_tx->rt_code[0] = ((buf[0] >> 6 & 0x1f) << 5) | + (buf[0] >> 11 & 0x1f); + mipi_tx->rt_code[1] = ((buf[1] >> 27 & 0x1f) << 5) | + (buf[0] >> 1 & 0x1f); + mipi_tx->rt_code[2] = ((buf[1] >> 17 & 0x1f) << 5) | + (buf[1] >> 22 & 0x1f); + mipi_tx->rt_code[3] = ((buf[1] >> 7 & 0x1f) << 5) | + (buf[1] >> 12 & 0x1f); + mipi_tx->rt_code[4] = ((buf[2] >> 27 & 0x1f) << 5) | + (buf[1] >> 2 & 0x1f); + kfree(buf); +} + static int mtk_mipi_tx_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -174,6 +212,8 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev) mipi_tx->dev = dev; + mtk_mipi_tx_get_calibration_datal(mipi_tx); + return of_clk_add_provider(dev->of_node, of_clk_src_simple_get, mipi_tx->pll); } diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.h b/drivers/gpu/drm/mediatek/mtk_mipi_tx.h index eea44327fe9f..c76f07c3fdeb 100644 --- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.h +++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.h @@ -12,9 +12,11 @@ #include #include #include +#include #include #include #include +#include struct mtk_mipitx_data { const u32 mppll_preserve; @@ -28,6 +30,7 @@ struct mtk_mipi_tx { void __iomem *regs; u32 data_rate; u32 mipitx_drive; + u32 rt_code[5]; const struct mtk_mipitx_data *driver_data; struct clk_hw pll_hw; struct clk *pll; diff --git a/drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c index e4cc967750cb..9f3e55aeebb2 100644 --- a/drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c +++ b/drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c @@ -28,6 +28,7 @@ #define MIPITX_PLL_CON4 0x003c #define RG_DSI_PLL_IBIAS (3 << 10) +#define MIPITX_D2P_RTCODE 0x0100 #define MIPITX_D2_SW_CTL_EN 0x0144 #define MIPITX_D0_SW_CTL_EN 0x0244 #define MIPITX_CK_CKMODE_EN 0x0328 @@ -108,6 +109,24 @@ static const struct clk_ops mtk_mipi_tx_pll_ops = { .recalc_rate = mtk_mipi_tx_pll_recalc_rate, }; +static void mtk_mipi_tx_config_calibration_data(struct mtk_mipi_tx *mipi_tx) +{ + int i, j; + + for (i = 0; i < 5; i++) { + if ((mipi_tx->rt_code[i] & 0x1f) == 0) + mipi_tx->rt_code[i] |= 0x10; + + if ((mipi_tx->rt_code[i] >> 5 & 0x1f) == 0) + mipi_tx->rt_code[i] |= 0x10 << 5; + + for (j = 0; j < 10; j++) + mtk_mipi_tx_update_bits(mipi_tx, + MIPITX_D2P_RTCODE * (i + 1) + j * 4, + 1, mipi_tx->rt_code[i] >> j & 1); + } +} + static void mtk_mipi_tx_power_on_signal(struct phy *phy) { struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy); @@ -130,6 +149,8 @@ static void mtk_mipi_tx_power_on_signal(struct phy *phy) RG_DSI_HSTX_LDO_REF_SEL, (mipi_tx->mipitx_drive - 3000) / 200 << 6); + mtk_mipi_tx_config_calibration_data(mipi_tx); + mtk_mipi_tx_set_bits(mipi_tx, MIPITX_CK_CKMODE_EN, DSI_CK_CKMODE_EN); }