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From: Jitao Shi <jitao.shi@mediatek.com>
To: CK Hu <ck.hu@mediatek.com>, David Airlie <airlied@linux.ie>,
	Daniel Vetter <daniel@ffwll.ch>,
	<dri-devel@lists.freedesktop.org>
Cc: Jitao Shi <jitao.shi@mediatek.com>,
	srv_heupstream@mediatek.com, stonea168@163.com,
	cawa.cheng@mediatek.com, sj.huang@mediatek.com,
	linux-mediatek@lists.infradead.org, bibby.hsieh@mediatek.com,
	Matthias Brugger <matthias.bgg@gmail.com>,
	yingjoe.chen@mediatek.com, eddie.huang@mediatek.com
Subject: [PATCH 3/4] drm/mediatek: add the mipitx driving control
Date: Mon, 16 Dec 2019 16:29:36 +0800	[thread overview]
Message-ID: <20191216082937.119164-4-jitao.shi@mediatek.com> (raw)
In-Reply-To: <20191216082937.119164-1-jitao.shi@mediatek.com>

Add a property in device tree to control the driving by different
board.

Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_mipi_tx.c        | 6 ++++++
 drivers/gpu/drm/mediatek/mtk_mipi_tx.h        | 1 +
 drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c | 7 +++++++
 3 files changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
index e4d34484ecc8..ec8406c86bfb 100644
--- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
+++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
@@ -125,6 +125,12 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	ret = of_property_read_u32(dev->of_node, "mipitx-current-drive",
+				   &mipi_tx->mipitx_drive);
+	/* If can't get the "mipi_tx->mipitx_drive", set it default 0x8 */
+	if (ret < 0)
+		mipi_tx->mipitx_drive = 0x8;
+
 	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..124fdf95f1e5 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 << 6);
+
 	mtk_mipi_tx_set_bits(mipi_tx, MIPITX_CK_CKMODE_EN, DSI_CK_CKMODE_EN);
 }
 
-- 
2.21.0
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

WARNING: multiple messages have this Message-ID (diff)
From: Jitao Shi <jitao.shi@mediatek.com>
To: CK Hu <ck.hu@mediatek.com>, David Airlie <airlied@linux.ie>,
	Daniel Vetter <daniel@ffwll.ch>,
	<dri-devel@lists.freedesktop.org>
Cc: Jitao Shi <jitao.shi@mediatek.com>,
	srv_heupstream@mediatek.com, stonea168@163.com,
	cawa.cheng@mediatek.com, sj.huang@mediatek.com,
	linux-mediatek@lists.infradead.org,
	Matthias Brugger <matthias.bgg@gmail.com>,
	yingjoe.chen@mediatek.com, eddie.huang@mediatek.com
Subject: [PATCH 3/4] drm/mediatek: add the mipitx driving control
Date: Mon, 16 Dec 2019 16:29:36 +0800	[thread overview]
Message-ID: <20191216082937.119164-4-jitao.shi@mediatek.com> (raw)
In-Reply-To: <20191216082937.119164-1-jitao.shi@mediatek.com>

Add a property in device tree to control the driving by different
board.

Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_mipi_tx.c        | 6 ++++++
 drivers/gpu/drm/mediatek/mtk_mipi_tx.h        | 1 +
 drivers/gpu/drm/mediatek/mtk_mt8183_mipi_tx.c | 7 +++++++
 3 files changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
index e4d34484ecc8..ec8406c86bfb 100644
--- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
+++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
@@ -125,6 +125,12 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	ret = of_property_read_u32(dev->of_node, "mipitx-current-drive",
+				   &mipi_tx->mipitx_drive);
+	/* If can't get the "mipi_tx->mipitx_drive", set it default 0x8 */
+	if (ret < 0)
+		mipi_tx->mipitx_drive = 0x8;
+
 	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..124fdf95f1e5 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 << 6);
+
 	mtk_mipi_tx_set_bits(mipi_tx, MIPITX_CK_CKMODE_EN, DSI_CK_CKMODE_EN);
 }
 
-- 
2.21.0
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

  parent reply	other threads:[~2019-12-16  8:29 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-16  8:29 [PATCH 0/4] Config mipi tx drive current and impedance Jitao Shi
2019-12-16  8:29 ` Jitao Shi
2019-12-16  8:29 ` [PATCH 1/4] dt-binds: display: mediatek: add property to control mipi tx drive current Jitao Shi
2019-12-16  8:29   ` Jitao Shi
2019-12-18  5:41   ` CK Hu
2019-12-18  5:41     ` CK Hu
2020-02-25 11:42     ` Jitao Shi
2020-02-25 11:42       ` Jitao Shi
2019-12-16  8:29 ` [PATCH 2/4] dt-binds: display: mediatek: get mipitx calibration data from nvmem Jitao Shi
2019-12-16  8:29   ` Jitao Shi
2019-12-16  8:29 ` Jitao Shi [this message]
2019-12-16  8:29   ` [PATCH 3/4] drm/mediatek: add the mipitx driving control Jitao Shi
2019-12-16  8:29 ` [PATCH 4/4] drm/mediatek: config mipitx impedance with calibration data Jitao Shi
2019-12-16  8:29   ` Jitao Shi
2019-12-20  2:31   ` CK Hu
2019-12-20  2:31     ` CK Hu

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