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drm/exynos: support exynos5422 mipi-dsi 

This patch supports mipi dsi for exynos5422. The dsi register
offsets of the exynos5422 are similar with exynos5433. However,
the values of the registers are quite different from the
exynos5433. For example, the exynos5422 uses sw reset like
previous chips.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Chanho Park 2016-01-30 23:11:50 +09:00 committed by Inki Dae
parent 92c96ff82b
commit fdc2e10893
2 changed files with 32 additions and 0 deletions
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1
Documentation/devicetree/bindings/display/exynos/exynos_dsim.txt
View File

@ -6,6 +6,7 @@ Required properties:
"samsung,exynos4210-mipi-dsi" /* for Exynos4 SoCs */
"samsung,exynos4415-mipi-dsi" /* for Exynos4415 SoC */
"samsung,exynos5410-mipi-dsi" /* for Exynos5410/5420/5440 SoCs */
"samsung,exynos5422-mipi-dsi" /* for Exynos5422/5800 SoCs */
"samsung,exynos5433-mipi-dsi" /* for Exynos5433 SoCs */
- reg: physical base address and length of the registers set for the device
- interrupts: should contain DSI interrupt

31
drivers/gpu/drm/exynos/exynos_drm_dsi.c
View File

@ -408,6 +408,24 @@ static unsigned int reg_values[] = {
[PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0b),
};
static unsigned int exynos5422_reg_values[] = {
[RESET_TYPE] = DSIM_SWRST,
[PLL_TIMER] = 500,
[STOP_STATE_CNT] = 0xf,
[PHYCTRL_ULPS_EXIT] = DSIM_PHYCTRL_ULPS_EXIT(0xaf),
[PHYCTRL_VREG_LP] = 0,
[PHYCTRL_SLEW_UP] = 0,
[PHYTIMING_LPX] = DSIM_PHYTIMING_LPX(0x08),
[PHYTIMING_HS_EXIT] = DSIM_PHYTIMING_HS_EXIT(0x0d),
[PHYTIMING_CLK_PREPARE] = DSIM_PHYTIMING1_CLK_PREPARE(0x09),
[PHYTIMING_CLK_ZERO] = DSIM_PHYTIMING1_CLK_ZERO(0x30),
[PHYTIMING_CLK_POST] = DSIM_PHYTIMING1_CLK_POST(0x0e),
[PHYTIMING_CLK_TRAIL] = DSIM_PHYTIMING1_CLK_TRAIL(0x0a),
[PHYTIMING_HS_PREPARE] = DSIM_PHYTIMING2_HS_PREPARE(0x0c),
[PHYTIMING_HS_ZERO] = DSIM_PHYTIMING2_HS_ZERO(0x11),
[PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0d),
};
static unsigned int exynos5433_reg_values[] = {
[RESET_TYPE] = DSIM_FUNCRST,
[PLL_TIMER] = 22200,
@ -482,6 +500,17 @@ static struct exynos_dsi_driver_data exynos5433_dsi_driver_data = {
.reg_values = exynos5433_reg_values,
};
static struct exynos_dsi_driver_data exynos5422_dsi_driver_data = {
.reg_ofs = exynos5433_reg_ofs,
.plltmr_reg = 0xa0,
.has_clklane_stop = 1,
.num_clks = 2,
.max_freq = 1500,
.wait_for_reset = 1,
.num_bits_resol = 12,
.reg_values = exynos5422_reg_values,
};
static struct of_device_id exynos_dsi_of_match[] = {
{ .compatible = "samsung,exynos3250-mipi-dsi",
.data = &exynos3_dsi_driver_data },
@ -491,6 +520,8 @@ static struct of_device_id exynos_dsi_of_match[] = {
.data = &exynos4415_dsi_driver_data },
{ .compatible = "samsung,exynos5410-mipi-dsi",
.data = &exynos5_dsi_driver_data },
{ .compatible = "samsung,exynos5422-mipi-dsi",
.data = &exynos5422_dsi_driver_data },
{ .compatible = "samsung,exynos5433-mipi-dsi",
.data = &exynos5433_dsi_driver_data },
{ }