HI ,
I am working on porting MIPI DSI LCD panel on a custom board
with OMAP4460. I am facing problems in clock settings. The pixel
clock according to data sheet is 154MHz. Panel resolution is
1920x1280. SYS_CLOCK is 38.4MHz. Data rate is given 925MHz. RGB888(24
bits per pixel) and i am using 4 data lanes of DSI1 in command mode.
>From OMAP4460 Programming manual version F, Figure 10-152 we are
following the algorithm. PLL_CLK should be less than 186MHz. How to
get the values for pclk_div, lclk_div, regn, regm, regm_dispc,
regm_dsi and lp_clk_div. I have tried with a set of values
.clocks = {
.dispc = {
.channel = {
.lck_div = 1,
.pck_div = 2,
.lcd_clk_src =
OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC,
},
.dispc_fclk_src = OMAP_DSS_CLK_SRC_FCK,
},
.dsi = {
.regn = 20,
.regm = 240,
.regm_dispc = 3,
.regm_dsi = 3,
.lp_clk_div = 10, /* LP Clock = 8.64 MHz
*/
.dsi_fclk_src =
OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI,
},
},
.channel = OMAP_DSS_CHANNEL_LCD,
.skip_init = false,
};
But it is failing in dsi_calc_clock_rates function in dsi.c.
Any solution to solve this? please reply
Thanks and regards
Tejeswini J
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