linux-imx: add clock patch for revision T0 1.0 of i.MX6Q
PATCH 1/1 linux-imx: add clock patch for revision T0 1.0 of i.MX6Q
The post dividers do not work on i.MX6Q rev T0 1.0 so they must be fixed to 1. As the table index was wrong, a divider a of 4 could still be requested which implied the clock not to be set properly. This is the root cause of the HDMI not working at high resolution on rev T0 1.0 of the SoC, giving the following error:mxc_sdc_fb fb.27: timeout when waiting for flip irq
Signed-off-by Gary Bisson <[email protected]>
---
This patch has been tested with a Sabrelite rev D (5-9-12).
Same as what has been applied on 3.10.17 earlier:
https://lists.yoctoproject.org/pipermail/meta-freescale/2014-December/011804.html
--- ...6q-fix-video-divider-for-revision-1.0-of-.patch | 35 ++++++++++++++++++++++ recipes-kernel/linux/linux-imx_3.10.31.bb | 2 ++ 2 files changed, 37 insertions(+) create mode 100644 recipes-kernel/linux/linux-imx-3.10.31/0001-ARM-clk-imx6q-fix-video-divider-for-revision-1.0-of-.patch
recipes-kernel/linux/linux-imx-3.10.31/0001-ARM-clk-imx6q-fix-video-divider-for-revision-1.0-of-.patch new file +35 -0
@@ -0,0 +1,35 @@ +From 0e981452d7130513e796c1c3d7348905c0d00dce Mon Sep 17 00:00:00 2001 +From: Gary Bisson <[email protected]> +Date: Tue, 2 Dec 2014 22:11:14 -0800 +Subject: [PATCH] ARM: clk-imx6q: fix video divider for revision 1.0 of i.MX6q + +As post dividers do not work on i.MX6Q revision 1.0 they must be fixed +to 1. As the table index was wrong, a divider a of 4 could still be +requested which implied the clock not to be set properly. This is the +root cause of the HDMI not working at high resolution on T1.0 version of +the SoC, giving the following error: +mxc_sdc_fb fb.27: timeout when waiting for flip irq + +Upstream-Status: Pending + +Signed-off-by: Gary Bisson <[email protected]> +--- + arch/arm/mach-imx/clk-imx6q.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c +index 25734ed..34e1616f 100644 +--- a/arch/arm/mach-imx/clk-imx6q.c ++++ b/arch/arm/mach-imx/clk-imx6q.c +@@ -312,7 +312,7 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) + post_div_table[1].div = 1; + post_div_table[2].div = 1; + video_div_table[1].div = 1; +- video_div_table[2].div = 1; ++ video_div_table[3].div = 1; + }; + + /* type name parent_name base div_mask */ +-- +2.1.3 +
recipes-kernel/linux/linux-imx_3.10.31.bb +2 -0
@@ -14,4 +14,6 @@ SRCBRANCH = "imx_3.10.31_1.1.0_beta" SRCREV = "94a7e472c47b800c001c0a5d17bb2f14a13e1980" LOCALVERSION = "-1.1.0_beta" +SRC_URI += "file://0001-ARM-clk-imx6q-fix-video-divider-for-revision-1.0-of-.patch" + COMPATIBLE_MACHINE = "(mx6)"
Signature · 1 line
2.1.3