From 5d4735d140898ebb459a8a54f082568b8ffdb212 Mon Sep 17 00:00:00 2001 From: Pravin Angolkar Date: Tue, 29 Sep 2015 19:31:41 +0530 Subject: intel/kunimitsu: Power gate Kepler device This patch power gates the Kepler module on skylake kunimitsu board. This is required to save power since this is consuming over 500mw of power in all active use cases. The device can be powered on later by using the kernel driver as required by setting the kepler enable gpio high. BRANCH=None BUG=chrome-os-partner:45962 TEST=Build and Boot Kunimitsu and check lspci. The Kepler device should not be listed. Also power measurement of board should give approximately 300mW of reduction in power. Change-Id: I244a23385e20ef1431dc895536c8a47e1f5770d7 Signed-off-by: Patrick Georgi Original-Commit-Id: 8d4fb7d01f32ac307a351c307b8461628c0e5414 Original-Change-Id: Idafa74d7ff14d67a5b1e635f783efd84b5a7399c Original-Signed-off-by: Pravin Angolkar Original-Reviewed-on: https://chromium-review.googlesource.com/302277 Original-Commit-Ready: Naveenkrishna Ch Original-Tested-by: Pravin K Angolkar Original-Reviewed-by: Aaron Durbin Reviewed-on: https://review.coreboot.org/12964 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth --- src/mainboard/intel/kunimitsu/gpio.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/mainboard/intel/kunimitsu') diff --git a/src/mainboard/intel/kunimitsu/gpio.h b/src/mainboard/intel/kunimitsu/gpio.h index 1470ba6f26..58b1948445 100755 --- a/src/mainboard/intel/kunimitsu/gpio.h +++ b/src/mainboard/intel/kunimitsu/gpio.h @@ -120,7 +120,7 @@ static const struct pad_config gpio_table[] = { /* UART0_RXD */ /* GPP_C8 */ /* UART0_TXD */ /* GPP_C9 */ /* NFC_RST* */ PAD_CFG_GPO(GPP_C10, 0, DEEP), -/* EN_PP3300_KEPLER */ PAD_CFG_TERM_GPO(GPP_C11, 1, 20K_PD, DEEP), +/* EN_PP3300_KEPLER */ PAD_CFG_TERM_GPO(GPP_C11, 0, 20K_PD, DEEP), /* PCH_MEM_CFG0 */ PAD_CFG_GPI(GPP_C12, NONE, DEEP), /* PCH_MEM_CFG1 */ PAD_CFG_GPI(GPP_C13, NONE, DEEP), /* PCH_MEM_CFG2 */ PAD_CFG_GPI(GPP_C14, NONE, DEEP), @@ -230,8 +230,8 @@ static const struct pad_config gpio_table[] = { /* Early pad configuration in romstage. */ static const struct pad_config early_gpio_table[] = { /* SRCCLKREQ2# */ PAD_CFG_NF(GPP_B7, NONE, DEEP, NF1), /* KEPLER */ -/* UART0_CTS# */ PAD_CFG_GPO(GPP_C11, 1, DEEP), /* EN_PP3300_KEPLER */ /* SPI_WP_STATUS */ PAD_CFG_GPI(GPP_C23, 20K_PU, DEEP), +/* UART0_CTS# */ PAD_CFG_GPO(GPP_C11, 0, DEEP), /* EN_PP3300_KEPLER */ }; #endif -- cgit v1.2.3