[coreboot-gerrit] New patch to review for coreboot: google/veyron_rialto: Reduce voltage and frequency in recovery mode

[Patrick Georgi (pgeorgi@google.com)]

Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/12135

-gerrit

commit 9dfc89d2486c15406a2cb71711758c29b7d85c06
Author: David Hendricks <dhendrix at chromium.org>
Date:   Fri Sep 25 15:27:46 2015 -0700

    google/veyron_rialto: Reduce voltage and frequency in recovery mode
    
    This applies CL:300617 to Rialto to down throttle further in
    recovery mode.
    
    BUG=chrome-os-partner:42054
    BRANCH=none
    TEST=Saw print statment in recovery mode with image.serial.bin,
    device only got mildly warm after several minutes (not hot).
    
    Change-Id: I08b6024d31c83c6bbd8c8d9d9a07adc9835e81fd
    Signed-off-by: Patrick Georgi <pgeorgi at chromium.org>
    Original-Commit-Id: 74eb9143fbe13df5f386185eab9e5ba9df27cadf
    Original-Signed-off-by: David Hendricks <dhendrix at chromium.org>
    Original-Change-Id: I9e57d826750cb523c115332fa13a6143bcff7449
    Original-Reviewed-on: https://chromium-review.googlesource.com/302631
---
 src/mainboard/google/veyron_rialto/mainboard.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/mainboard/google/veyron_rialto/mainboard.c b/src/mainboard/google/veyron_rialto/mainboard.c
index c2dde19..35de7e0 100644
--- a/src/mainboard/google/veyron_rialto/mainboard.c
+++ b/src/mainboard/google/veyron_rialto/mainboard.c
@@ -91,6 +91,14 @@ static void mainboard_init(device_t dev)
 	elog_init();
 	elog_add_watchdog_reset();
 	elog_add_boot_reason();
+
+	/* If recovery mode is detected, reduce frequency and voltage to reduce
+	 * heat in case machine is left unattended. chrome-os-partner:41201. */
+	if (recovery_mode_enabled())  {
+		printk(BIOS_DEBUG, "Reducing APLL freq for recovery mode.\n");
+		rkclk_configure_cpu(APLL_600_MHZ);
+		rk808_configure_buck(1, 900);
+	}
 }
 
 static void mainboard_enable(device_t dev)