From fd9cdf6dec65aa4d6fd36cc6983c2f24f83c623e Mon Sep 17 00:00:00 2001 From: David Hendricks Date: Fri, 25 Sep 2015 15:21:35 -0700 Subject: [PATCH] google/veyron_rialto: Throttle to 1416MHz @ 1200mV in bootblock The 1392MHz value used to throttle the RK3288 earlier was somewhat arbitrary. This patch brings the throttling in sync with the operating points specified in the Linux device tree for RK3288. BUG=chrome-os-partner:42054 BRANCH=none TEST=Saw print statement in image.serial.bin indicating that APLL was set to the desired frequency. Change-Id: Ibe570267bbfe23f010ad5e1ea651356291b9c63c Signed-off-by: Patrick Georgi Original-Commit-Id: a146f23b13cb0f6da93ada65648cf33ecfaaa7d6 Original-Signed-off-by: David Hendricks Original-Change-Id: I6bcdb5fd6ffa3f9a22e79c519bdb7980492e2318 Original-Reviewed-on: https://chromium-review.googlesource.com/302633 Reviewed-on: http://review.coreboot.org/12137 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks --- src/mainboard/google/veyron_rialto/bootblock.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/src/mainboard/google/veyron_rialto/bootblock.c b/src/mainboard/google/veyron_rialto/bootblock.c index a539c08ba8..e87d8d17e2 100644 --- a/src/mainboard/google/veyron_rialto/bootblock.c +++ b/src/mainboard/google/veyron_rialto/bootblock.c @@ -63,9 +63,7 @@ void bootblock_mainboard_init(void) /* Slowly raise to max CPU voltage to prevent overshoot */ rk808_configure_buck(1, 1200); udelay(175);/* Must wait for voltage to stabilize,2mV/us */ - rk808_configure_buck(1, 1400); - udelay(100);/* Must wait for voltage to stabilize,2mV/us */ - rkclk_configure_cpu(APLL_1392_MHZ); + rkclk_configure_cpu(APLL_1416_MHZ); /* i2c1 for tpm */ write32(&rk3288_grf->iomux_i2c1, IOMUX_I2C1);