[coreboot-gerrit] New patch to review for coreboot: intel/apollolake_rvp: Take PCI-express devices out of reset

[Andrey Petrov (andrey.petrov@intel.com)]

Andrey Petrov (andrey.petrov at intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13409

-gerrit

commit fe1e3ef8b0e4c960ef5ff28398abb8729e77e63b
Author: Alexandru Gagniuc <alexandrux.gagniuc at intel.com>
Date:   Fri Jan 15 14:52:20 2016 -0800

    intel/apollolake_rvp: Take PCI-express devices out of reset
    
    The reset signals for PCIe links are connected to GPIOs. Those need
    to manually be set to the proper level before PCIe links will work.
    
    Change-Id: I4fbf3d02516fbc651dda709b41bbab120372bee9
    Signed-off-by: Alexandru Gagniuc <alexandrux.gagniuc at intel.com>
---
 src/mainboard/intel/apollolake_rvp/mainboard.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/mainboard/intel/apollolake_rvp/mainboard.c b/src/mainboard/intel/apollolake_rvp/mainboard.c
index dc7bc1e..c11a080 100644
--- a/src/mainboard/intel/apollolake_rvp/mainboard.c
+++ b/src/mainboard/intel/apollolake_rvp/mainboard.c
@@ -14,10 +14,19 @@
 #include <soc/gpio.h>
 
 /* TODO: Move GPIO config to its own file once we get more GPIOs in the list */
+/*
+ * GPIOs:
+ * A tilde (~) before the name means that the signal uses inverted logic.
+ * PCIE RST signals route to the PWRGOOD(PCIe slot) or PERST0(M2 slot) inputs.
+ */
 static const struct pad_config aplk_rvp_gpios[] = {
+	PAD_CFG_GPO(GPIO_13, 1, DEEP),			/* ~PCIE_SLOT2_RST_N */
+	PAD_CFG_GPO(GPIO_15, 1, DEEP),			/* ~WIFI_RST_GPIO_N */
 	PAD_CFG_GPO(GPIO_22, 1, DEEP),			/* SATA Direct power */
+	PAD_CFG_GPO(GPIO_37, 1, DEEP),			/* ~LAN_RST_N */
 	PAD_CFG_NF(GPIO_46, NATIVE, DEEP, NF1),		/* UART2 RX*/
 	PAD_CFG_NF(GPIO_47, NATIVE, DEEP, NF1),		/* UART2 TX*/
+	PAD_CFG_GPO(GPIO_152, 1, DEEP),			/* ~PCIE_SLOT1_RST_N */
 	PAD_CFG_NF(GPIO_193, NATIVE, DEEP, NF1),	/* PANEL0_VDDEN */
 	PAD_CFG_NF(GPIO_194, NATIVE, DEEP, NF1),	/* PANEL0_BKLTEN */
 	PAD_CFG_NF(GPIO_195, NATIVE, DEEP, NF1),	/* PANEL0_BKLTCTL */