On Wed, Mar 8, 2023 at 10:41 AM Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx> wrote: > > Samsung MIPI DSIM master can also be found in i.MX8M Mini/Nano SoC. > > Add compatible and associated driver_data for it. > I have a few updates that I want to push once this series has been accepted to support non-burst mode, fine-tune the PMS clock, and a few other things. I have the DSI working through a DSI to HDMI bridge along with audio in case anyone is interested. I have my repo here which is based on Jagan's V16 branch: https://github.com/aford173/linux/tree/imx8mm-dsi-v16-beacon For the series: Tested-by: Adam Ford <aford173@xxxxxxxxx> #imx8mm-beacon > Reviewed-by: Marek Vasut <marex@xxxxxxx> > Reviewed-by: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx> > Acked-by: Robert Foss <robert.foss@xxxxxxxxxx> > Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> > Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> > Signed-off-by: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx> > --- > Changes for v16, v15, v13: > - none > Changes for v12: > - collect RB from Marek > Changes for v11: > - collect RB from Frieder > - collect ACK from Robert > Changes for v10, v9: > - none > Changed for v8: > - fix and update the comment > Changes for v7, v6: > - none > Changes for v3: > - enable DSIM_QUIRK_FIXUP_SYNC_POL quirk > Changes for v5: > - [mszyprow] rebased and adjusted to the new driver initialization > - drop quirk > Changes for v4: > - none > Changes for v3: > - enable DSIM_QUIRK_FIXUP_SYNC_POL quirk > Changes for v2: > - collect Laurent r-b > Changes for v1: > - none > > drivers/gpu/drm/bridge/samsung-dsim.c | 44 +++++++++++++++++++++++++++ > 1 file changed, 44 insertions(+) > > diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c > index f9a5e69a0fcd..f3bd06489a39 100644 > --- a/drivers/gpu/drm/bridge/samsung-dsim.c > +++ b/drivers/gpu/drm/bridge/samsung-dsim.c > @@ -376,6 +376,24 @@ static const unsigned int exynos5433_reg_values[] = { > [PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0c), > }; > > +static const unsigned int imx8mm_dsim_reg_values[] = { > + [RESET_TYPE] = DSIM_SWRST, > + [PLL_TIMER] = 500, > + [STOP_STATE_CNT] = 0xf, > + [PHYCTRL_ULPS_EXIT] = 0, > + [PHYCTRL_VREG_LP] = 0, > + [PHYCTRL_SLEW_UP] = 0, > + [PHYTIMING_LPX] = DSIM_PHYTIMING_LPX(0x06), > + [PHYTIMING_HS_EXIT] = DSIM_PHYTIMING_HS_EXIT(0x0b), > + [PHYTIMING_CLK_PREPARE] = DSIM_PHYTIMING1_CLK_PREPARE(0x07), > + [PHYTIMING_CLK_ZERO] = DSIM_PHYTIMING1_CLK_ZERO(0x26), > + [PHYTIMING_CLK_POST] = DSIM_PHYTIMING1_CLK_POST(0x0d), > + [PHYTIMING_CLK_TRAIL] = DSIM_PHYTIMING1_CLK_TRAIL(0x08), > + [PHYTIMING_HS_PREPARE] = DSIM_PHYTIMING2_HS_PREPARE(0x08), > + [PHYTIMING_HS_ZERO] = DSIM_PHYTIMING2_HS_ZERO(0x0d), > + [PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0b), > +}; > + > static const struct samsung_dsim_driver_data exynos3_dsi_driver_data = { > .reg_ofs = exynos_reg_ofs, > .plltmr_reg = 0x50, > @@ -437,6 +455,22 @@ static const struct samsung_dsim_driver_data exynos5422_dsi_driver_data = { > .reg_values = exynos5422_reg_values, > }; > > +static const struct samsung_dsim_driver_data imx8mm_dsi_driver_data = { > + .reg_ofs = exynos5433_reg_ofs, > + .plltmr_reg = 0xa0, > + .has_clklane_stop = 1, > + .num_clks = 2, > + .max_freq = 2100, > + .wait_for_reset = 0, > + .num_bits_resol = 12, > + /* > + * Unlike Exynos, PLL_P(PMS_P) offset 14 is used in i.MX8M Mini/Nano/Plus > + * downstream driver - drivers/gpu/drm/bridge/sec-dsim.c > + */ > + .pll_p_offset = 14, > + .reg_values = imx8mm_dsim_reg_values, > +}; > + > static const struct samsung_dsim_driver_data * > samsung_dsim_types[DSIM_TYPE_COUNT] = { > [DSIM_TYPE_EXYNOS3250] = &exynos3_dsi_driver_data, > @@ -444,6 +478,7 @@ samsung_dsim_types[DSIM_TYPE_COUNT] = { > [DSIM_TYPE_EXYNOS5410] = &exynos5_dsi_driver_data, > [DSIM_TYPE_EXYNOS5422] = &exynos5422_dsi_driver_data, > [DSIM_TYPE_EXYNOS5433] = &exynos5433_dsi_driver_data, > + [DSIM_TYPE_IMX8MM] = &imx8mm_dsi_driver_data, > }; > > static inline struct samsung_dsim *host_to_dsi(struct mipi_dsi_host *h) > @@ -1877,7 +1912,16 @@ const struct dev_pm_ops samsung_dsim_pm_ops = { > }; > EXPORT_SYMBOL_GPL(samsung_dsim_pm_ops); > > +static const struct samsung_dsim_plat_data samsung_dsim_imx8mm_pdata = { > + .hw_type = DSIM_TYPE_IMX8MM, > + .host_ops = &generic_dsim_host_ops, > +}; > + > static const struct of_device_id samsung_dsim_of_match[] = { > + { > + .compatible = "fsl,imx8mm-mipi-dsim", > + .data = &samsung_dsim_imx8mm_pdata, > + }, > { /* sentinel. */ } > }; > MODULE_DEVICE_TABLE(of, samsung_dsim_of_match); > -- > 2.25.1 >
