projects/imx6/patches/linux: update VPU352 patch

Signed-off-by: Stephan Raue <stephan@openelec.tv>
OpenELEC · Apr 2, 2015 · 70c7bfb · 70c7bfb
1 parent bbd97b5
commit 70c7bfb
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/projects/imx6/patches/linux/linux-999-3.14-vpu352.patch b/projects/imx6/patches/linux/linux-999-3.14-vpu352.patch
@@ -1,3 +1,20 @@
+ENGR00313202 ARM: imx: add VPU 352M support for i.MX6Q
+When VPU freq is set to 352MHz, it need to source clk
+from PLL2_PFD2_396M, and PLL2_PFD2_396M need to change
+freq to 352M.
+
+VDDSOC/PU needs to be at highest setpoint when VPU@352Mhz,
+cpufreq will be disabled as it will not save any power if
+VDDSOC/PU's voltage stays at highest setpoint.
+
+Busfreq will be disabled as it needs PLL2_PFD2 to be
+as 396MHz to achieve low power audio freq setpoint.
+
+To enable VPU 352MHz feature, select it in menuconfig,
+it is disabled by default.
+
+Signed-off-by: Anson Huang <b20788@freescale.com>
+
 diff -ruN linux-cuboxi-3.14-dc5edb8-original/arch/arm/mach-imx/busfreq-imx6.c linux-cuboxi-3.14-dc5edb8/arch/arm/mach-imx/busfreq-imx6.c
 --- linux-cuboxi-3.14-dc5edb8-original/arch/arm/mach-imx/busfreq-imx6.c	2015-02-16 21:54:12.298970658 +0100
 +++ linux-cuboxi-3.14-dc5edb8/arch/arm/mach-imx/busfreq-imx6.c	2015-02-16 21:55:33.370972180 +0100