diff options
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/dw_mipi_dsi.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/video/dw_mipi_dsi.c b/drivers/video/dw_mipi_dsi.c index 44a60ac532..4055ef49b6 100644 --- a/drivers/video/dw_mipi_dsi.c +++ b/drivers/video/dw_mipi_dsi.c @@ -485,15 +485,27 @@ static void dw_mipi_dsi_set_mode(struct dw_mipi_dsi *dsi, static void dw_mipi_dsi_init_pll(struct dw_mipi_dsi *dsi) { + const struct mipi_dsi_phy_ops *phy_ops = dsi->phy_ops; + unsigned int esc_rate; + u32 esc_clk_division; + /* * The maximum permitted escape clock is 20MHz and it is derived from - * lanebyteclk, which is running at "lane_mbps / 8". Thus we want: + * lanebyteclk, which is running at "lane_mbps / 8". + */ + if (phy_ops->get_esc_clk_rate) + phy_ops->get_esc_clk_rate(dsi->device, &esc_rate); + else + esc_rate = 20; /* Default to 20MHz */ + + /* + * We want: * - * (lane_mbps >> 3) / esc_clk_division < 20 + * (lane_mbps >> 3) / esc_clk_division < X * which is: - * (lane_mbps >> 3) / 20 > esc_clk_division + * (lane_mbps >> 3) / X > esc_clk_division */ - u32 esc_clk_division = (dsi->lane_mbps >> 3) / 20 + 1; + esc_clk_division = (dsi->lane_mbps >> 3) / esc_rate + 1; dsi_write(dsi, DSI_PWR_UP, RESET); |