From 492938a33484e8d1b14ed82d2545ecde08f6be30 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 17 Apr 2013 13:09:56 +0000 Subject: nitrogen6x: Setup CCM_CCOSR register CKO1 drives sgtl5000 codec clock on nitrogen boards and wandboard. Doing this setup in the bootloader will allow us to remove a lot of code in arch/arm/mach-imx/mach-imx6q.c from the mainline kernel. Also, according to Eric Nelson: "enabling the clock will remove squeal after an ungraceful reboot (watchdog) if hooked up to speakers." Signed-off-by: Fabio Estevam --- board/boundary/nitrogen6x/clocks.cfg | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'board/boundary/nitrogen6x/clocks.cfg') diff --git a/board/boundary/nitrogen6x/clocks.cfg b/board/boundary/nitrogen6x/clocks.cfg index e7d1f86..0a3b47b 100644 --- a/board/boundary/nitrogen6x/clocks.cfg +++ b/board/boundary/nitrogen6x/clocks.cfg @@ -44,3 +44,14 @@ DATA 4, MX6_IOMUXC_GPR4, 0xF00000CF /* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */ DATA 4, MX6_IOMUXC_GPR6, 0x007F007F DATA 4, MX6_IOMUXC_GPR7, 0x007F007F + +/* + * Setup CCM_CCOSR register as follows: + * + * cko1_en = 1 --> CKO1 enabled + * cko1_div = 111 --> divide by 8 + * cko1_sel = 1011 --> ahb_clk_root + * + * This sets CKO1 at ahb_clk_root/8 = 132/8 = 16.5 MHz + */ +DATA 4, CCM_CCOSR, 0x000000fb -- cgit v1.1