Re: [PATCH v4 7/8] drm/mediatek: add mipi panel support

From: YT Shen
Date: Wed Jul 27 2016 - 05:49:17 EST

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Hi CK,

On Wed, 2016-07-20 at 14:27 +0800, CK Hu wrote:
> Hi, YT:
>
> Some comments inline.
>
> On Fri, 2016-07-15 at 18:07 +0800, YT Shen wrote:
> > From: shaoming chen <shaoming.chen@xxxxxxxxxxxx>
> >
> > add dsi and mipi tx driver for mipi panel support
> >
> > Signed-off-by: shaoming chen <shaoming.chen@xxxxxxxxxxxx>
> > ---
> > drivers/gpu/drm/mediatek/mtk_dsi.c | 169 ++++++++++++++++++++++----------
> > drivers/gpu/drm/mediatek/mtk_mipi_tx.c | 82 +++++++++++-----
> > 2 files changed, 173 insertions(+), 78 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
> > index 1f99894..4eae63c 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_dsi.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
> > @@ -29,9 +29,6 @@
> >
> > #include "mtk_drm_ddp_comp.h"
> >
> > -#define DSI_VIDEO_FIFO_DEPTH (1920 / 4)
> > -#define DSI_HOST_FIFO_DEPTH 64
> > -
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> > #define DSI_START 0x00
> >
> > #define DSI_INTEN 0x08
> > @@ -55,7 +52,7 @@
> > #define MIX_MODE BIT(17)
> >
> > #define DSI_TXRX_CTRL 0x18
> > -#define VC_NUM (2 << 0)
> > +#define VC_NUM BIT(1)
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> > #define LANE_NUM (0xf << 2)
> > #define DIS_EOT BIT(6)
> > #define NULL_EN BIT(7)
> > @@ -94,6 +91,8 @@
> > #define DSI_RACK 0x84
> > #define RACK BIT(0)
> >
> > +#define DSI_MEM_CONTI 0x90
> > +
> > #define DSI_PHY_LCCON 0x104
> > #define LC_HS_TX_EN BIT(0)
> > #define LC_ULPM_EN BIT(1)
> > @@ -126,6 +125,10 @@
> > #define CLK_HS_POST (0xff << 8)
> > #define CLK_HS_EXIT (0xff << 16)
> >
> > +#define DSI_VM_CMD_CON 0x130
> > +#define VM_CMD_EN BIT(0)
> > +#define TS_VFP_EN BIT(5)
>
> The bitwise definition should add one more tab to align other bitwise
> definition in this file.
Will do.

>
> > +
> > #define DSI_CMDQ0 0x180
> >
> > #define NS_TO_CYCLE(n, c) ((n) / (c) + (((n) % (c)) ? 1 : 0))
> > @@ -239,11 +242,11 @@ static void mtk_dsi_mask(struct mtk_dsi *dsi, u32 offset, u32 mask, u32 data)
> > writel((temp & ~mask) | (data & mask), dsi->regs + offset);
> > }
> >
> > -static void dsi_phy_timconfig(struct mtk_dsi *dsi)
> > +static void mtk_dsi_phy_timconfig(struct mtk_dsi *dsi)
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> > {
> > u32 timcon0, timcon1, timcon2, timcon3;
> > - unsigned int ui, cycle_time;
> > - unsigned int lpx;
> > + u32 ui, cycle_time;
> > + u32 lpx;
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> >
> > ui = 1000 / dsi->data_rate + 0x01;
> > cycle_time = 8000 / dsi->data_rate + 0x01;
> > @@ -273,7 +276,7 @@ static void mtk_dsi_disable(struct mtk_dsi *dsi)
> > mtk_dsi_mask(dsi, DSI_CON_CTRL, DSI_EN, 0);
> > }
> >
> > -static void mtk_dsi_reset(struct mtk_dsi *dsi)
> > +static void mtk_dsi_reset_engine(struct mtk_dsi *dsi)
> > {
> > mtk_dsi_mask(dsi, DSI_CON_CTRL, DSI_RESET, DSI_RESET);
> > mtk_dsi_mask(dsi, DSI_CON_CTRL, DSI_RESET, 0);
> > @@ -293,7 +296,9 @@ static int mtk_dsi_poweron(struct mtk_dsi *dsi)
> > * mipi_ratio is mipi clk coefficient for balance the pixel clk in mipi.
> > * we set mipi_ratio is 1.05.
> > */
> > - dsi->data_rate = dsi->vm.pixelclock * 3 * 21 / (1 * 1000 * 10);
> > + dsi->data_rate = dsi->vm.pixelclock * 12 * 21;
> > + dsi->data_rate /= (dsi->lanes * 1000 * 10);
> > + dev_info(dev, "set mipitx's data rate: %dMHz\n", dsi->data_rate);
> >
> > ret = clk_set_rate(dsi->hs_clk, dsi->data_rate * 1000000);
> > if (ret < 0) {
> > @@ -315,10 +320,6 @@ static int mtk_dsi_poweron(struct mtk_dsi *dsi)
> > goto err_disable_engine_clk;
> > }
> >
> > - mtk_dsi_enable(dsi);
> > - mtk_dsi_reset(dsi);
> > - dsi_phy_timconfig(dsi);
> > -
> > return 0;
> >
> > err_disable_engine_clk:
> > @@ -330,33 +331,33 @@ err_refcount:
> > return ret;
> > }
> >
> > -static void dsi_clk_ulp_mode_enter(struct mtk_dsi *dsi)
> > +static void mtk_dsi_clk_ulp_mode_enter(struct mtk_dsi *dsi)
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> > {
> > mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_HS_TX_EN, 0);
> > - mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_ULPM_EN, 0);
> > + mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_ULPM_EN, LC_ULPM_EN);
> > }
> >
> > -static void dsi_clk_ulp_mode_leave(struct mtk_dsi *dsi)
> > +static void mtk_dsi_clk_ulp_mode_leave(struct mtk_dsi *dsi)
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> > {
> > mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_ULPM_EN, 0);
> > mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_WAKEUP_EN, LC_WAKEUP_EN);
> > mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_WAKEUP_EN, 0);
> > }
> >
> > -static void dsi_lane0_ulp_mode_enter(struct mtk_dsi *dsi)
> > +static void mtk_dsi_lane0_ulp_mode_enter(struct mtk_dsi *dsi)
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> > {
> > mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_HS_TX_EN, 0);
> > - mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_ULPM_EN, 0);
> > + mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_ULPM_EN, LD0_ULPM_EN);
> > }
> >
> > -static void dsi_lane0_ulp_mode_leave(struct mtk_dsi *dsi)
> > +static void mtk_dsi_lane0_ulp_mode_leave(struct mtk_dsi *dsi)
> > {
> > mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_ULPM_EN, 0);
> > mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_WAKEUP_EN, LD0_WAKEUP_EN);
> > mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_WAKEUP_EN, 0);
> > }
> >
> > -static bool dsi_clk_hs_state(struct mtk_dsi *dsi)
> > +static bool mtk_dsi_clk_hs_state(struct mtk_dsi *dsi)
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> > {
> > u32 tmp_reg1;
> >
> > @@ -364,15 +365,15 @@ static bool dsi_clk_hs_state(struct mtk_dsi *dsi)
> > return ((tmp_reg1 & LC_HS_TX_EN) == 1) ? true : false;
> > }
> >
> > -static void dsi_clk_hs_mode(struct mtk_dsi *dsi, bool enter)
> > +static void mtk_dsi_clk_hs_mode(struct mtk_dsi *dsi, bool enter)
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> > {
> > - if (enter && !dsi_clk_hs_state(dsi))
> > + if (enter && !mtk_dsi_clk_hs_state(dsi))
> > mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_HS_TX_EN, LC_HS_TX_EN);
> > - else if (!enter && dsi_clk_hs_state(dsi))
> > + else if (!enter && mtk_dsi_clk_hs_state(dsi))
> > mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_HS_TX_EN, 0);
> > }
> >
> > -static void dsi_set_mode(struct mtk_dsi *dsi)
> > +static void mtk_dsi_set_mode(struct mtk_dsi *dsi)
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> > {
> > u32 vid_mode = CMD_MODE;
> >
> > @@ -382,12 +383,22 @@ static void dsi_set_mode(struct mtk_dsi *dsi)
> > if ((dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) &&
> > !(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE))
> > vid_mode = BURST_MODE;
> > + else
> > + vid_mode = SYNC_EVENT_MODE;
> > }
> >
> > writel(vid_mode, dsi->regs + DSI_MODE_CTRL);
> > }
> >
> > -static void dsi_ps_control_vact(struct mtk_dsi *dsi)
> > +static void mtk_dsi_set_vm_cmd(struct mtk_dsi *dsi)
> > +{
> > + writel(0x3c, dsi->regs + DSI_MEM_CONTI);
> > +
> > + mtk_dsi_mask(dsi, DSI_VM_CMD_CON, VM_CMD_EN, VM_CMD_EN);
> > + mtk_dsi_mask(dsi, DSI_VM_CMD_CON, TS_VFP_EN, TS_VFP_EN);
> > +}
> > +
> > +static void mtk_dsi_ps_control_vact(struct mtk_dsi *dsi)
> > {
> > struct videomode *vm = &dsi->vm;
> > u32 dsi_buf_bpp, ps_wc;
> > @@ -421,7 +432,7 @@ static void dsi_ps_control_vact(struct mtk_dsi *dsi)
> > writel(ps_wc, dsi->regs + DSI_HSTX_CKL_WC);
> > }
> >
> > -static void dsi_rxtx_control(struct mtk_dsi *dsi)
> > +static void mtk_dsi_rxtx_control(struct mtk_dsi *dsi)
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> > {
> > u32 tmp_reg;
> >
> > @@ -443,12 +454,15 @@ static void dsi_rxtx_control(struct mtk_dsi *dsi)
> > break;
> > }
> >
> > + tmp_reg |= (dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) << 6;
> > + tmp_reg |= (dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET) >> 3;
> > +
> > writel(tmp_reg, dsi->regs + DSI_TXRX_CTRL);
> > }
> >
> > -static void dsi_ps_control(struct mtk_dsi *dsi)
> > +static void mtk_dsi_ps_control(struct mtk_dsi *dsi)
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> > {
> > - unsigned int dsi_tmp_buf_bpp;
> > + u32 dsi_tmp_buf_bpp;
> > u32 tmp_reg;
> >
> > switch (dsi->format) {
> > @@ -478,12 +492,12 @@ static void dsi_ps_control(struct mtk_dsi *dsi)
> > writel(tmp_reg, dsi->regs + DSI_PSCTRL);
> > }
> >
> > -static void dsi_config_vdo_timing(struct mtk_dsi *dsi)
> > +static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi)
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> > {
> > - unsigned int horizontal_sync_active_byte;
> > - unsigned int horizontal_backporch_byte;
> > - unsigned int horizontal_frontporch_byte;
> > - unsigned int dsi_tmp_buf_bpp;
> > + u32 horizontal_sync_active_byte;
> > + u32 horizontal_backporch_byte;
> > + u32 horizontal_frontporch_byte;
> > + u32 dsi_tmp_buf_bpp;
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> >
> > struct videomode *vm = &dsi->vm;
> >
> > @@ -512,7 +526,7 @@ static void dsi_config_vdo_timing(struct mtk_dsi *dsi)
> > writel(horizontal_backporch_byte, dsi->regs + DSI_HBP_WC);
> > writel(horizontal_frontporch_byte, dsi->regs + DSI_HFP_WC);
> >
> > - dsi_ps_control(dsi);
> > + mtk_dsi_ps_control(dsi);
> > }
> >
> > static void mtk_dsi_start(struct mtk_dsi *dsi)
> > @@ -521,6 +535,19 @@ static void mtk_dsi_start(struct mtk_dsi *dsi)
> > writel(1, dsi->regs + DSI_START);
> > }
> >
> > +static void mtk_dsi_stop(struct mtk_dsi *dsi)
> > +{
> > + writel(0, dsi->regs + DSI_START);
> > +}
> > +
> > +static void mtk_dsi_set_cmd_mode(struct mtk_dsi *dsi)
> > +{
> > + u32 tmp_reg1;
> > +
> > + tmp_reg1 = CMD_MODE;
> > + writel(tmp_reg1, dsi->regs + DSI_MODE_CTRL);
> > +}
> > +
> > static void mtk_dsi_set_interrupt_enable(struct mtk_dsi *dsi)
> > {
> > u32 inten = DSI_INT_ALL_BITS;
> > @@ -609,6 +636,21 @@ static s32 mtk_dsi_wait_for_irq_timeout(struct mtk_dsi *dsi, u32 irq_bit,
> > return -1;
> > }
> >
> > +static void mtk_dsi_switch_to_cmd_mode(struct mtk_dsi *dsi)
> > +{
> > + s32 ret = 0;
> > +
> > + mtk_dsi_set_cmd_mode(dsi);
> > +
> > + ret = mtk_dsi_wait_for_irq_timeout(dsi, DSI_INT_VM_DONE_FLAG, 500);
> > + if (ret != 0) {
> > + dev_info(dsi->dev, "dsi wait engine idle timeout\n");
> > +
> > + mtk_dsi_enable(dsi);
> > + mtk_dsi_reset_engine(dsi);
> > + }
> > +}
> > +
> > static void mtk_dsi_poweroff(struct mtk_dsi *dsi)
> > {
> > if (WARN_ON(dsi->refcount == 0))
> > @@ -617,8 +659,19 @@ static void mtk_dsi_poweroff(struct mtk_dsi *dsi)
> > if (--dsi->refcount != 0)
> > return;
> >
> > - dsi_lane0_ulp_mode_enter(dsi);
> > - dsi_clk_ulp_mode_enter(dsi);
> > + mtk_dsi_switch_to_cmd_mode(dsi);
> > +
> > + if (dsi->panel) {
> > + if (drm_panel_unprepare(dsi->panel)) {
> > + DRM_ERROR("failed to unprepare the panel\n");
> > + return;
> > + }
> > + }
> > +
> > + mtk_dsi_reset_engine(dsi);
> > +
> > + mtk_dsi_lane0_ulp_mode_enter(dsi);
> > + mtk_dsi_clk_ulp_mode_enter(dsi);
> >
> > mtk_dsi_disable(dsi);
> >
> > @@ -635,32 +688,40 @@ static void mtk_output_dsi_enable(struct mtk_dsi *dsi)
> > if (dsi->enabled)
> > return;
> >
> > - if (dsi->panel) {
> > - if (drm_panel_prepare(dsi->panel)) {
> > - DRM_ERROR("failed to setup the panel\n");
> > - return;
> > - }
> > - }
> > -
> > ret = mtk_dsi_poweron(dsi);
> > if (ret < 0) {
> > DRM_ERROR("failed to power on dsi\n");
> > return;
> > }
> >
> > - dsi_rxtx_control(dsi);
> > + usleep_range(20000, 21000);
> >
> > - dsi_clk_ulp_mode_leave(dsi);
> > - dsi_lane0_ulp_mode_leave(dsi);
> > - dsi_clk_hs_mode(dsi, 0);
> > - dsi_set_mode(dsi);
> > -
> > - dsi_ps_control_vact(dsi);
> > - dsi_config_vdo_timing(dsi);
> > + mtk_dsi_rxtx_control(dsi);
> > + mtk_dsi_phy_timconfig(dsi);
> > + mtk_dsi_ps_control_vact(dsi);
> > + mtk_dsi_set_vm_cmd(dsi);
> > + mtk_dsi_config_vdo_timing(dsi);
> > mtk_dsi_set_interrupt_enable(dsi);
> >
> > - dsi_set_mode(dsi);
> > - dsi_clk_hs_mode(dsi, 1);
> > + mtk_dsi_enable(dsi);
> > + mtk_dsi_clk_ulp_mode_leave(dsi);
> > + mtk_dsi_lane0_ulp_mode_leave(dsi);
> > + mtk_dsi_clk_hs_mode(dsi, 0);
> > +
> > + if (dsi->panel) {
> > + if (drm_panel_prepare(dsi->panel)) {
> > + DRM_ERROR("failed to prepare the panel\n");
> > + return;
> > + }
> > +
> > + if (drm_panel_enable(dsi->panel)) {
> > + DRM_ERROR("failed to enable the panel\n");
> > + return;
> > + }
> > + }
> > +
> > + mtk_dsi_set_mode(dsi);
> > + mtk_dsi_clk_hs_mode(dsi, 1);
> >
> > mtk_dsi_start(dsi);
> >
> > @@ -679,6 +740,7 @@ static void mtk_output_dsi_disable(struct mtk_dsi *dsi)
> > }
> > }
> >
> > + mtk_dsi_stop(dsi);
> > mtk_dsi_poweroff(dsi);
> >
> > dsi->enabled = false;
> > @@ -1351,6 +1413,7 @@ static int mtk_dsi_remove(struct platform_device *pdev)
> > }
> >
> > static const struct of_device_id mtk_dsi_of_match[] = {
> > + { .compatible = "mediatek,mt2701-dsi" },
>
> This is not related to 'mipi panel support'. So move this modification
> to another patch.
We will split common part to another patch.

>
> > { .compatible = "mediatek,mt8173-dsi" },
> > { },
> > };
> > diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
> > index cf8f38d..3bffc40 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
> > @@ -16,6 +16,7 @@
> > #include <linux/delay.h>
> > #include <linux/io.h>
> > #include <linux/module.h>
> > +#include <linux/of_device.h>
> > #include <linux/platform_device.h>
> > #include <linux/phy/phy.h>
> >
> > @@ -87,6 +88,9 @@
> >
> > #define MIPITX_DSI_PLL_CON2 0x58
> >
> > +#define MIPITX_DSI_PLL_TOP 0x64
> > +#define RG_DSI_MPPLL_PRESERVE (0xff << 8)
> > +
> > #define MIPITX_DSI_PLL_PWR 0x68
> > #define RG_DSI_MPPLL_SDM_PWR_ON BIT(0)
> > #define RG_DSI_MPPLL_SDM_ISO_EN BIT(1)
> > @@ -123,10 +127,32 @@
> > #define SW_LNT2_HSTX_PRE_OE BIT(24)
> > #define SW_LNT2_HSTX_OE BIT(25)
> >
> > +struct mtk_mipitx_data {
> > + const u32 data;
> > +};
> > +
> > +static const struct mtk_mipitx_data mt2701_mipitx_data = {
> > + .data = (3 << 8)
> > +};
> > +
> > +static const struct mtk_mipitx_data mt8173_mipitx_data = {
> > + .data = (0 << 8)
> > +};
> > +
> > +static const struct of_device_id mtk_mipi_tx_match[] = {
> > + { .compatible = "mediatek,mt2701-mipi-tx",
> > + .data = &mt2701_mipitx_data },
> > + { .compatible = "mediatek,mt8173-mipi-tx",
> > + .data = &mt8173_mipitx_data },
> > + {},
> > +};
>
> This looks more like 'mt2701 support' rather than 'mipi panel support'.
> So move this modification to another patch.
We will split common part to another patch.

>
> > +
> > struct mtk_mipi_tx {
> > struct device *dev;
> > void __iomem *regs;
> > - unsigned int data_rate;
> > + u32 data_rate;
> > + const struct mtk_mipitx_data *driver_data;
> > +
> > struct clk_hw pll_hw;
> > struct clk *pll;
> > };
> > @@ -163,12 +189,14 @@ static void mtk_mipi_tx_update_bits(struct mtk_mipi_tx *mipi_tx, u32 offset,
> > static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw)
> > {
> > struct mtk_mipi_tx *mipi_tx = mtk_mipi_tx_from_clk_hw(hw);
> > - unsigned int txdiv, txdiv0, txdiv1;
> > + u8 txdiv, txdiv0, txdiv1;
> > u64 pcw;
> >
> > dev_dbg(mipi_tx->dev, "prepare: %u Hz\n", mipi_tx->data_rate);
> >
> > - if (mipi_tx->data_rate >= 500000000) {
> > + if (mipi_tx->data_rate > 1250000000) {
> > + return -EINVAL;
> > + } else if (mipi_tx->data_rate >= 500000000) {
> > txdiv = 1;
> > txdiv0 = 0;
> > txdiv1 = 0;
> > @@ -192,6 +220,10 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw)
> > return -EINVAL;
> > }
> >
> > + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_TOP_CON,
> > + RG_DSI_LNT_IMP_CAL_CODE | RG_DSI_LNT_HS_BIAS_EN,
> > + (8 << 4) | RG_DSI_LNT_HS_BIAS_EN);
> > +
> > mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_BG_CON,
> > RG_DSI_VOUT_MSK |
> > RG_DSI_BG_CKEN | RG_DSI_BG_CORE_EN,
> > @@ -201,24 +233,18 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw)
> >
> > usleep_range(30, 100);
> >
> > - mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_TOP_CON,
> > - RG_DSI_LNT_IMP_CAL_CODE | RG_DSI_LNT_HS_BIAS_EN,
> > - (8 << 4) | RG_DSI_LNT_HS_BIAS_EN);
> > -
> > - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_CON,
> > - RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN);
> > + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_CON,
> > + RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN,
> > + RG_DSI_CKG_LDOOUT_EN | RG_DSI_LDOCORE_EN);
> >
> > mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_PWR,
> > RG_DSI_MPPLL_SDM_PWR_ON |
> > RG_DSI_MPPLL_SDM_ISO_EN,
> > RG_DSI_MPPLL_SDM_PWR_ON);
> >
> > - mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
> > - RG_DSI_MPPLL_PLL_EN);
> > -
> > mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
> > - RG_DSI_MPPLL_TXDIV0 | RG_DSI_MPPLL_TXDIV1 |
> > - RG_DSI_MPPLL_PREDIV,
> > + RG_DSI_MPPLL_PREDIV | RG_DSI_MPPLL_TXDIV0 |
> > + RG_DSI_MPPLL_TXDIV1 | RG_DSI_MPPLL_POSDIV,
> > (txdiv0 << 3) | (txdiv1 << 5));
> >
> > /*
> > @@ -233,15 +259,21 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw)
> > 26000000);
> > writel(pcw, mipi_tx->regs + MIPITX_DSI_PLL_CON2);
> >
> > - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_PLL_CON1,
> > - RG_DSI_MPPLL_SDM_FRA_EN);
> > + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_CON1,
> > + RG_DSI_MPPLL_SDM_FRA_EN,
> > + RG_DSI_MPPLL_SDM_FRA_EN);
> >
> > - mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_PLL_CON0, RG_DSI_MPPLL_PLL_EN);
> > + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
> > + RG_DSI_MPPLL_PLL_EN, RG_DSI_MPPLL_PLL_EN);
> >
> > usleep_range(20, 100);
> >
> > mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON1,
> > - RG_DSI_MPPLL_SDM_SSC_EN);
> > + RG_DSI_MPPLL_SDM_SSC_EN);
> > +
> > + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_TOP,
> > + RG_DSI_MPPLL_PRESERVE,
> > + mipi_tx->driver_data->data);
> >
> > return 0;
> > }
> > @@ -255,6 +287,10 @@ static void mtk_mipi_tx_pll_unprepare(struct clk_hw *hw)
> > mtk_mipi_tx_clear_bits(mipi_tx, MIPITX_DSI_PLL_CON0,
> > RG_DSI_MPPLL_PLL_EN);
> >
> > + mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_TOP,
> > + RG_DSI_MPPLL_PRESERVE,
> > + mipi_tx->driver_data->data);
> > +
> > mtk_mipi_tx_update_bits(mipi_tx, MIPITX_DSI_PLL_PWR,
> > RG_DSI_MPPLL_SDM_ISO_EN |
> > RG_DSI_MPPLL_SDM_PWR_ON,
> > @@ -310,7 +346,7 @@ static const struct clk_ops mtk_mipi_tx_pll_ops = {
> > static int mtk_mipi_tx_power_on_signal(struct phy *phy)
> > {
> > struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy);
> > - unsigned int reg;
> > + u32 reg;
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> >
> > for (reg = MIPITX_DSI_CLOCK_LANE;
> > reg <= MIPITX_DSI_DATA_LANE3; reg += 4)
> > @@ -341,7 +377,7 @@ static int mtk_mipi_tx_power_on(struct phy *phy)
> > static void mtk_mipi_tx_power_off_signal(struct phy *phy)
> > {
> > struct mtk_mipi_tx *mipi_tx = phy_get_drvdata(phy);
> > - unsigned int reg;
> > + u32 reg;
>
> I think this should be moved to a 'cleaning up and refine' patch.
OK.

>
> >
> > mtk_mipi_tx_set_bits(mipi_tx, MIPITX_DSI_TOP_CON,
> > RG_DSI_PAD_TIE_LOW_EN);
> > @@ -391,6 +427,7 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev)
> > if (!mipi_tx)
> > return -ENOMEM;
> >
> > + mipi_tx->driver_data = of_device_get_match_data(dev);
> > mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > mipi_tx->regs = devm_ioremap_resource(dev, mem);
> > if (IS_ERR(mipi_tx->regs)) {
> > @@ -448,11 +485,6 @@ static int mtk_mipi_tx_remove(struct platform_device *pdev)
> > return 0;
> > }
> >
> > -static const struct of_device_id mtk_mipi_tx_match[] = {
> > - { .compatible = "mediatek,mt8173-mipi-tx", },
> > - {},
> > -};
> > -
> > struct platform_driver mtk_mipi_tx_driver = {
> > .probe = mtk_mipi_tx_probe,
> > .remove = mtk_mipi_tx_remove,
>
> Regards,
> CK
>

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