yongqiang niu has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/46574 )
Change subject: WIP: coreboot: Add dsi file ......................................................................
WIP: coreboot: Add dsi file
Add dsi APIs for coreboot display
Signed-off-by: Huijuan Xie huijuan.xie@mediatek.corp-partner.google.com Change-Id: I067db08f5600aeee216f482fec49ab75f75a602a --- M src/soc/mediatek/mt8192/Makefile.inc A src/soc/mediatek/mt8192/dsi.c M src/soc/mediatek/mt8192/include/soc/addressmap.h A src/soc/mediatek/mt8192/include/soc/dsi.h 4 files changed, 129 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/74/46574/1
diff --git a/src/soc/mediatek/mt8192/Makefile.inc b/src/soc/mediatek/mt8192/Makefile.inc index 04d57dc..b2a8a9e 100755 --- a/src/soc/mediatek/mt8192/Makefile.inc +++ b/src/soc/mediatek/mt8192/Makefile.inc @@ -59,6 +59,8 @@ ramstage-y += ../common/uart.c ramstage-y += ../common/usb.c usb.c
+ramstage-y += ../common/dsi.c dsi.c + MT8192_BLOB_DIR := 3rdparty/blobs/soc/mediatek/mt8192
cbfs-files-y += dpm.dm diff --git a/src/soc/mediatek/mt8192/dsi.c b/src/soc/mediatek/mt8192/dsi.c new file mode 100644 index 0000000..9f54f49 --- /dev/null +++ b/src/soc/mediatek/mt8192/dsi.c @@ -0,0 +1,70 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <assert.h> +#include <device/mmio.h> +#include <delay.h> +#include <soc/dsi.h> +#include <soc/pll.h> + +void mtk_dsi_configure_mipi_tx(u32 data_rate, u32 lanes) +{ + unsigned int txdiv0, txdiv1; + u64 pcw; + + if (data_rate >= 2000 * MHz) { + txdiv0 = 0; + txdiv1 = 0; + } else if (data_rate >= 1000 * MHz) { + txdiv0 = 1; + txdiv1 = 0; + } else if (data_rate >= 500 * MHz) { + txdiv0 = 2; + txdiv1 = 0; + } else if (data_rate > 250 * MHz) { + /* (data_rate == 250MHz) is a special case that should go to the + else-block below (txdiv0 = 4) */ + txdiv0 = 3; + txdiv1 = 0; + } else { + /* MIN = 125 */ + assert(data_rate >= MTK_DSI_DATA_RATE_MIN_MHZ * MHz); + txdiv0 = 4; + txdiv1 = 0; + } + + clrbits32(&mipi_tx->pll_con4, BIT(11) | BIT(10)); + setbits32(&mipi_tx->pll_pwr, AD_DSI_PLL_SDM_PWR_ON); + udelay(30); + clrbits32(&mipi_tx->pll_pwr, AD_DSI_PLL_SDM_ISO_EN); + + pcw = (u64)data_rate * (1 << txdiv0) * (1 << txdiv1); + pcw <<= 24; + pcw /= CLK26M_HZ; + + write32(&mipi_tx->pll_con0, pcw); + clrsetbits32(&mipi_tx->pll_con1, RG_DSI_PLL_POSDIV, txdiv0 << 8); + udelay(30); + setbits32(&mipi_tx->pll_con1, RG_DSI_PLL_EN); + + /* BG_LPF_EN / BG_CORE_EN */ + write32(&mipi_tx->lane_con, 0x3fff0180); + udelay(40); + write32(&mipi_tx->lane_con, 0x3fff00c0); + + /* Switch OFF each Lane */ + clrbits32(&mipi_tx->d0_sw_ctl_en, DSI_SW_CTL_EN); + clrbits32(&mipi_tx->d1_sw_ctl_en, DSI_SW_CTL_EN); + clrbits32(&mipi_tx->d2_sw_ctl_en, DSI_SW_CTL_EN); + clrbits32(&mipi_tx->d3_sw_ctl_en, DSI_SW_CTL_EN); + clrbits32(&mipi_tx->ck_sw_ctl_en, DSI_SW_CTL_EN); + + setbits32(&mipi_tx->ck_ckmode_en, DSI_CK_CKMODE_EN); +} + +void mtk_dsi_reset(void) +{ + write32(&dsi0->dsi_force_commit, + DSI_FORCE_COMMIT_USE_MMSYS | DSI_FORCE_COMMIT_ALWAYS); + write32(&dsi0->dsi_con_ctrl, 1); + write32(&dsi0->dsi_con_ctrl, 0); +} diff --git a/src/soc/mediatek/mt8192/include/soc/addressmap.h b/src/soc/mediatek/mt8192/include/soc/addressmap.h index 3fd2bca..eac4a9a 100644 --- a/src/soc/mediatek/mt8192/include/soc/addressmap.h +++ b/src/soc/mediatek/mt8192/include/soc/addressmap.h @@ -64,6 +64,8 @@ MSDC0_TOP_BASE = IO_PHYS + 0x01F50000, MSDC0_BASE = IO_PHYS + 0x01F60000, DEVAPC_INFRA_AO_BASE = IO_PHYS + 0x00030000, + MIPITX_BASE = IO_PHYS + 0x01E50000, + DSI0_BASE = IO_PHYS + 0x04010000, };
#endif diff --git a/src/soc/mediatek/mt8192/include/soc/dsi.h b/src/soc/mediatek/mt8192/include/soc/dsi.h new file mode 100644 index 0000000..4535d90 --- /dev/null +++ b/src/soc/mediatek/mt8192/include/soc/dsi.h @@ -0,0 +1,55 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef SOC_MEDIATEK_MT8183_DSI_H +#define SOC_MEDIATEK_MT8183_DSI_H + +#include <soc/dsi_common.h> + +/* DSI features */ +#define MTK_DSI_MIPI_RATIO_NUMERATOR 100 +#define MTK_DSI_MIPI_RATIO_DENOMINATOR 100 +#define MTK_DSI_DATA_RATE_MIN_MHZ 125 +#define MTK_DSI_HAVE_SIZE_CON 1 +#define PIXEL_STREAM_CUSTOM_HEADER 0xb + +/* MIPITX is SOC specific and cannot live in common. */ + +/* MIPITX_REG */ +struct mipi_tx_regs { + u32 reserved0[3]; + u32 lane_con; + u32 reserved1[6]; + u32 pll_pwr; + u32 pll_con0; + u32 pll_con1; + u32 pll_con2; + u32 pll_con3; + u32 pll_con4; + u32 reserved2[65]; + u32 d2_sw_ctl_en; + u32 reserved3[63]; + u32 d0_sw_ctl_en; + u32 reserved4[56]; + u32 ck_ckmode_en; + u32 reserved5[6]; + u32 ck_sw_ctl_en; + u32 reserved6[63]; + u32 d1_sw_ctl_en; + u32 reserved7[63]; + u32 d3_sw_ctl_en; +}; + +check_member(mipi_tx_regs, pll_con4, 0x3c); +check_member(mipi_tx_regs, d3_sw_ctl_en, 0x544); +static struct mipi_tx_regs *const mipi_tx = (void *)MIPITX_BASE; + +/* Register values */ +#define DSI_CK_CKMODE_EN BIT(0) +#define DSI_SW_CTL_EN BIT(0) +#define AD_DSI_PLL_SDM_PWR_ON BIT(0) +#define AD_DSI_PLL_SDM_ISO_EN BIT(1) + +#define RG_DSI_PLL_EN BIT(4) +#define RG_DSI_PLL_POSDIV (0x7 << 8) + +#endif