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drm/bridge: samsung-dsim: add driver support for exynos7870 DSIM bridge 

Add support for Exynos7870's DSIM IP block in the bridge driver.

Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Kaustabh Chakraborty 2025-07-06 23:55:46 +05:30 committed by Inki Dae
parent 7f8d35b589
commit 77169a11d4
No known key found for this signature in database
GPG Key ID: C5601BECE83FF9B6
2 changed files with 83 additions and 0 deletions
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82
drivers/gpu/drm/bridge/samsung-dsim.c
View File

@ -244,6 +244,13 @@ static struct clk_bulk_data exynos5433_clk_bulk_data[] = {
{ .id = "sclk_rgb_vclk_to_dsim0" },
};
static struct clk_bulk_data exynos7870_clk_bulk_data[] = {
{ .id = "bus" },
{ .id = "pll" },
{ .id = "byte" },
{ .id = "esc" },
};
enum reg_idx {
DSIM_STATUS_REG, /* Status register (legacy) */
DSIM_LINK_STATUS_REG, /* Link status register */
@ -320,6 +327,32 @@ static const unsigned int exynos5433_reg_ofs[] = {
[DSIM_PHYTIMING2_REG] = 0xBC,
};
static const unsigned int exynos7870_reg_ofs[] = {
[DSIM_LINK_STATUS_REG] = 0x04,
[DSIM_DPHY_STATUS_REG] = 0x08,
[DSIM_SWRST_REG] = 0x0C,
[DSIM_CLKCTRL_REG] = 0x10,
[DSIM_TIMEOUT_REG] = 0x14,
[DSIM_ESCMODE_REG] = 0x1C,
[DSIM_MDRESOL_REG] = 0x20,
[DSIM_MVPORCH_REG] = 0x24,
[DSIM_MHPORCH_REG] = 0x28,
[DSIM_MSYNC_REG] = 0x2C,
[DSIM_CONFIG_REG] = 0x30,
[DSIM_INTSRC_REG] = 0x34,
[DSIM_INTMSK_REG] = 0x38,
[DSIM_PKTHDR_REG] = 0x3C,
[DSIM_PAYLOAD_REG] = 0x40,
[DSIM_RXFIFO_REG] = 0x44,
[DSIM_SFRCTRL_REG] = 0x48,
[DSIM_FIFOCTRL_REG] = 0x4C,
[DSIM_PLLCTRL_REG] = 0x94,
[DSIM_PHYCTRL_REG] = 0xA4,
[DSIM_PHYTIMING_REG] = 0xB4,
[DSIM_PHYTIMING1_REG] = 0xB8,
[DSIM_PHYTIMING2_REG] = 0xBC,
};
enum reg_value_idx {
RESET_TYPE,
PLL_TIMER,
@ -392,6 +425,24 @@ static const unsigned int exynos5433_reg_values[] = {
[PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0c),
};
static const unsigned int exynos7870_reg_values[] = {
[RESET_TYPE] = DSIM_SWRST,
[PLL_TIMER] = 80000,
[STOP_STATE_CNT] = 0xa,
[PHYCTRL_ULPS_EXIT] = DSIM_PHYCTRL_ULPS_EXIT(0x177),
[PHYCTRL_VREG_LP] = 0,
[PHYCTRL_SLEW_UP] = 0,
[PHYTIMING_LPX] = DSIM_PHYTIMING_LPX(0x07),
[PHYTIMING_HS_EXIT] = DSIM_PHYTIMING_HS_EXIT(0x0c),
[PHYTIMING_CLK_PREPARE] = DSIM_PHYTIMING1_CLK_PREPARE(0x08),
[PHYTIMING_CLK_ZERO] = DSIM_PHYTIMING1_CLK_ZERO(0x2b),
[PHYTIMING_CLK_POST] = DSIM_PHYTIMING1_CLK_POST(0x0d),
[PHYTIMING_CLK_TRAIL] = DSIM_PHYTIMING1_CLK_TRAIL(0x09),
[PHYTIMING_HS_PREPARE] = DSIM_PHYTIMING2_HS_PREPARE(0x09),
[PHYTIMING_HS_ZERO] = DSIM_PHYTIMING2_HS_ZERO(0x0f),
[PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0c),
};
static const unsigned int imx8mm_dsim_reg_values[] = {
[RESET_TYPE] = DSIM_SWRST,
[PLL_TIMER] = 500,
@ -563,6 +614,36 @@ static const struct samsung_dsim_driver_data exynos5422_dsi_driver_data = {
.min_freq = 500,
};
static const struct samsung_dsim_driver_data exynos7870_dsi_driver_data = {
.reg_ofs = exynos7870_reg_ofs,
.plltmr_reg = 0xa0,
.has_clklane_stop = 1,
.has_sfrctrl = 1,
.clk_data = exynos7870_clk_bulk_data,
.num_clks = ARRAY_SIZE(exynos7870_clk_bulk_data),
.max_freq = 1500,
.wait_for_hdr_fifo = 0,
.wait_for_reset = 1,
.num_bits_resol = 12,
.video_mode_bit = 18,
.pll_stable_bit = 24,
.esc_clken_bit = 16,
.byte_clken_bit = 17,
.tx_req_hsclk_bit = 20,
.lane_esc_clk_bit = 8,
.lane_esc_data_offset = 9,
.pll_p_offset = 13,
.pll_m_offset = 3,
.pll_s_offset = 0,
.main_vsa_offset = 16,
.reg_values = exynos7870_reg_values,
.pll_fin_min = 6,
.pll_fin_max = 12,
.m_min = 41,
.m_max = 125,
.min_freq = 500,
};
static const struct samsung_dsim_driver_data imx8mm_dsi_driver_data = {
.reg_ofs = exynos5433_reg_ofs,
.plltmr_reg = 0xa0,
@ -604,6 +685,7 @@ 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_EXYNOS7870] = &exynos7870_dsi_driver_data,
[DSIM_TYPE_IMX8MM] = &imx8mm_dsi_driver_data,
[DSIM_TYPE_IMX8MP] = &imx8mm_dsi_driver_data,
};

1
include/drm/bridge/samsung-dsim.h
View File

@ -29,6 +29,7 @@ enum samsung_dsim_type {
DSIM_TYPE_EXYNOS5410,
DSIM_TYPE_EXYNOS5422,
DSIM_TYPE_EXYNOS5433,
DSIM_TYPE_EXYNOS7870,
DSIM_TYPE_IMX8MM,
DSIM_TYPE_IMX8MP,
DSIM_TYPE_COUNT,