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Commit 640dcfa0 authored by Guennadi Liakhovetski's avatar Guennadi Liakhovetski Committed by Paul Mundt
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ARM: mach-shmobile: optimize PLLC2 frequency for HDMI 



On ap4evb PLLC2 is only used as a parent of the HDMI clock, therefore it can
be reconfigured freely to improve HDMI clock precision.

Signed-off-by: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent c724d07a

arch/arm/mach-shmobile/board-ap4evb.c

+24 −0
Original line number Diff line number Diff line
@@ -669,10 +669,15 @@ static struct platform_device lcdc1_device = { 
	},

};



static long ap4evb_clk_optimize(unsigned long target, unsigned long *best_freq,

				unsigned long *parent_freq);





static struct sh_mobile_hdmi_info hdmi_info = {

	.lcd_chan = &sh_mobile_lcdc1_info.ch[0],

	.lcd_dev = &lcdc1_device.dev,

	.flags = HDMI_SND_SRC_SPDIF,

	.clk_optimize_parent = ap4evb_clk_optimize,

};



static struct resource hdmi_resources[] = {
@@ -699,6 +704,25 @@ static struct platform_device hdmi_device = { 
	},

};



static long ap4evb_clk_optimize(unsigned long target, unsigned long *best_freq,

				unsigned long *parent_freq)

{

	struct clk *hdmi_ick = clk_get(&hdmi_device.dev, "ick");

	long error;



	if (IS_ERR(hdmi_ick)) {

		int ret = PTR_ERR(hdmi_ick);

		pr_err("Cannot get HDMI ICK: %d\n", ret);

		return ret;

	}



	error = clk_round_parent(hdmi_ick, target, best_freq, parent_freq, 1, 64);



	clk_put(hdmi_ick);



	return error;

}



static struct gpio_led ap4evb_leds[] = {

	{

		.name			= "led4",