From a18307951b8fc915cea5db9b3e95dd2add2caa8c Mon Sep 17 00:00:00 2001 From: Yidi Lin Date: Thu, 10 Dec 2020 15:59:49 +0800 Subject: soc/mediatek/mt8183: Move dsi driver to common/ The mt8183 dsi driver can be shared with mt819x SoC. Move dsi.c to common/ folder and rename it to dis_v2.c to differentiate it from mt8173's dsi driver. TEST=emerge-kukuki coreboot Change-Id: I722d3e67f230ab8eb729900cdf15b922eb91a072 Signed-off-by: Yidi Lin Reviewed-on: https://review.coreboot.org/c/coreboot/+/48530 Tested-by: build bot (Jenkins) Reviewed-by: Hung-Te Lin --- src/soc/mediatek/common/mtk_mipi_dphy.c | 71 +++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 src/soc/mediatek/common/mtk_mipi_dphy.c (limited to 'src/soc/mediatek/common/mtk_mipi_dphy.c') diff --git a/src/soc/mediatek/common/mtk_mipi_dphy.c b/src/soc/mediatek/common/mtk_mipi_dphy.c new file mode 100644 index 0000000000..fa73ddb4e6 --- /dev/null +++ b/src/soc/mediatek/common/mtk_mipi_dphy.c @@ -0,0 +1,71 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include +#include +#include +#include +#include +#include + +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); +} -- cgit v1.2.3