[S] Change in coreboot[master]: mb/google/rex/var/ovis: Enable LAN1

[Subrata Banik (Code Review)]

Attention is currently required from: Jakub Czapiga, Kapil Porwal, Tarun Tuli.

Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/76212?usp=email )

Change subject: mb/google/rex/var/ovis: Enable LAN1
......................................................................

mb/google/rex/var/ovis: Enable LAN1

This patch performs below operations to enable LAN1.
  - Add overridetree.cb entry to configure the LAN device.
  - Complete the LAN1/SD PEREST power sequencing

BUG=b:289395519
TEST=Able to boot google/ovis with LAN1 being enabled.

Change-Id: Ifb67cb8e6fc03e3ff14b1b3d8382322fd0b3aeff
Signed-off-by: Subrata Banik 
---
M src/mainboard/google/rex/variants/ovis/gpio.c
M src/mainboard/google/rex/variants/ovis/overridetree.cb
2 files changed, 13 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/12/76212/1

diff --git a/src/mainboard/google/rex/variants/ovis/gpio.c b/src/mainboard/google/rex/variants/ovis/gpio.c
index 26e77f5..6c1794d 100644
--- a/src/mainboard/google/rex/variants/ovis/gpio.c
+++ b/src/mainboard/google/rex/variants/ovis/gpio.c
@@ -400,13 +400,16 @@

/* GPP_H10 : [] ==> SOC_WP_OD */
    PAD_CFG_GPI_GPIO_DRIVER_LOCK(GPP_H10, NONE, LOCK_CONFIG),
+
+	/* GPP_D02 : [] ==> SD_PERST_L */
+	PAD_CFG_GPO(GPP_D02, 0, DEEP),
 };

static const struct pad_config romstage_gpio_table[] = {
    /* A20 : [] ==> SSD_PERST_L */
    PAD_CFG_GPO(GPP_A20, 0, DEEP),
    /* GPP_D02 : [] ==> SD_PERST_L */
-	PAD_CFG_GPO(GPP_D02, 1, DEEP),
+	PAD_CFG_GPO(GPP_D02, 0, DEEP),
 };

const struct pad_config *variant_gpio_table(size_t *num)
diff --git a/src/mainboard/google/rex/variants/ovis/overridetree.cb b/src/mainboard/google/rex/variants/ovis/overridetree.cb
index 80a22de..259aaf5 100644
--- a/src/mainboard/google/rex/variants/ovis/overridetree.cb
+++ b/src/mainboard/google/rex/variants/ovis/overridetree.cb
@@ -55,6 +55,15 @@
    			device generic 0 alias dptf_policy on end
    		end
    	end
+		device ref pcie_rp7 on
+			# Enable LAN1 Card PCIE 7 using clk 2
+			register "pcie_rp[PCH_RP(7)]" = "{
+				.clk_src = 2,
+				.clk_req = 2,
+				.flags = PCIE_RP_LTR | PCIE_RP_AER,
+			}"
+		end	#PCIE7 LAN1 card
+
    	device ref pcie_rp11 on
    		# Enable SSD Card PCIE 11 using clk 7
    		register "pcie_rp[PCH_RP(11)]" = "{