| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <soc/addressmap.h> |
| #include <soc/clock.h> |
| #include <device/device.h> |
| #include <soc/nvidia/tegra/types.h> |
| #include <soc/display.h> |
| #include <soc/mipi_dsi.h> |
| #include <soc/mipi_display.h> |
| #include <soc/tegra_dsi.h> |
| #include <soc/mipi-phy.h> |
| #include <types.h> |
| |
| int mipi_dphy_set_timing(struct tegra_dsi *dsi) |
| { |
| |
| u32 freq = (dsi->clk_rate * 2) / 1000000; |
| |
| u32 thsdexit = (DSI_PHY_TIMING_DIV(120, (freq))); |
| u32 thstrial = (((3) + (DSI_PHY_TIMING_DIV((DSI_THSTRAIL_VAL(freq)), |
| freq)))); |
| u32 tdatzero = DSI_PHY_TIMING_DIV(((145) + (5 * (DSI_TBIT(freq)))), |
| (freq)); |
| u32 thsprepare = DSI_PHY_TIMING_DIV((65 + (5*(DSI_TBIT(freq)))), freq); |
| u32 tclktrial = (DSI_PHY_TIMING_DIV(80, freq)); |
| u32 tclkpost = ((DSI_PHY_TIMING_DIV(((70) + ((52) * (DSI_TBIT(freq)))), |
| freq))); |
| u32 tclkzero = (DSI_PHY_TIMING_DIV(260, freq)); |
| u32 ttlpx = (DSI_PHY_TIMING_DIV(60, freq)); |
| u32 tclkprepare = (DSI_PHY_TIMING_DIV(60, freq)); |
| u32 tclkpre = 1; //min = 8*UI per mipi spec, tclk_pre=0 should be ok, but using 1 value |
| u32 twakeup = 0x7F; //min = 1ms |
| |
| u32 ttaget; |
| u32 ttassure; |
| u32 ttago; |
| u32 value; |
| |
| if (!ttlpx) { |
| ttaget = 5; |
| ttassure = 2; |
| ttago = 4; |
| } else { |
| ttaget = 5 * ttlpx; |
| ttassure = 2 * ttlpx; |
| ttago = 4 * ttlpx; |
| } |
| |
| value = (thsdexit << 24) | |
| (thstrial << 16) | |
| (tdatzero << 8) | |
| (thsprepare << 0); |
| tegra_dsi_writel(dsi, value, DSI_PHY_TIMING_0); |
| |
| value = (tclktrial << 24) | |
| (tclkpost << 16) | |
| (tclkzero << 8) | |
| (ttlpx << 0); |
| tegra_dsi_writel(dsi, value, DSI_PHY_TIMING_1); |
| |
| value = (tclkprepare << 16) | |
| (tclkpre << 8) | |
| (twakeup << 0); |
| tegra_dsi_writel(dsi, value, DSI_PHY_TIMING_2); |
| |
| value = (ttaget << 16) | |
| (ttassure << 8) | |
| (ttago << 0), |
| tegra_dsi_writel(dsi, value, DSI_BTA_TIMING); |
| return 0; |
| } |