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 v7 4/5] drm/mediatek: add the mipitx driving control in device tree
Date: Fri, 20 Sep 2019 17:04:31 +0800 [thread overview]
Message-ID: <20190920090432.3308-5-jitao.shi@mediatek.com> (raw)
In-Reply-To: <20190920090432.3308-1-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 db13ebdbe262..5bda8355145f 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
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next prev parent reply other threads:[~2019-09-20 9:04 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-20 9:04 [PATCH v7 0/5] Support mipitx for mt8183 Jitao Shi
2019-09-20 9:04 ` [PATCH v7 1/5] dt-bindings: display: mediatek: update dsi supported chips Jitao Shi
2019-09-23 5:36 ` CK Hu
2019-09-27 1:34 ` CK Hu
2019-09-20 9:04 ` [PATCH v7 2/5] drm/mediatek: separate mipi_tx to different file Jitao Shi
2019-09-20 9:04 ` [PATCH v7 3/5] drm/mediatek: add mipi_tx driver for mt8183 Jitao Shi
2019-09-26 9:06 ` CK Hu
2019-09-20 9:04 ` Jitao Shi [this message]
2019-09-20 9:04 ` [PATCH v7 5/5] drm/mediatek: config mipitx impedance with calibration data Jitao Shi
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