[XS] Change in coreboot[master]: mb/google/nissa/var/uldren: Modify GPP_D7 and PCIE RP7

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/75644?usp=email )

Change subject: mb/google/nissa/var/uldren: Modify GPP_D7 and PCIE RP7
......................................................................

mb/google/nissa/var/uldren: Modify GPP_D7 and PCIE RP7

Uldren does not have PCIE device and should disable PCIE RP7 and
GPP_D7 for preventing PCIe controller not power gate in S0ix.

BUG=b:283735051
BRANCH=firmware-nissa-15217.B
TEST=emerge-nissa coreboot chromeos-bootimage
1. PCIE RP7: cbmem -c | grep 'PCI: 00:1c.6'
[SPEW ]  PCI: 00:1c.6: enabled 0
[SPEW ]  PCI: 00:1c.6: enabled 0
2. GPP_D7: iotools mmio_read32 0xfd6d0ab0
0x44000300

Change-Id: Ia8a2c0f5530c7a056e8d706c651cac1d49b2091c
Signed-off-by: Dtrain Hsu 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75644
Reviewed-by: Harsha B R 
Tested-by: build bot (Jenkins) 
Reviewed-by: Derek Huang 
---
M src/mainboard/google/brya/variants/uldren/gpio.c
M src/mainboard/google/brya/variants/uldren/overridetree.cb
2 files changed, 3 insertions(+), 0 deletions(-)

Approvals:
  Harsha B R: Looks good to me, approved
  build bot (Jenkins): Verified
  Derek Huang: Looks good to me, approved

diff --git a/src/mainboard/google/brya/variants/uldren/gpio.c b/src/mainboard/google/brya/variants/uldren/gpio.c
index e1e5e8c..c0c43814 100644
--- a/src/mainboard/google/brya/variants/uldren/gpio.c
+++ b/src/mainboard/google/brya/variants/uldren/gpio.c
@@ -21,6 +21,8 @@
    PAD_CFG_GPO(GPP_C1, 1, DEEP),
    /* D6  : SRCCLKREQ1# ==> WWAN_EN */
    PAD_CFG_GPO(GPP_D6, 1, DEEP),
+	/* D7  : SRCCLKREQ2# ==> NC */
+	PAD_NC(GPP_D7, NONE),
    /* D8  : SRCCLKREQ3# ==> NC */
    PAD_NC(GPP_D8, NONE),
    /* D15 : ISH_UART0_RTS# ==> NC */
diff --git a/src/mainboard/google/brya/variants/uldren/overridetree.cb b/src/mainboard/google/brya/variants/uldren/overridetree.cb
index 77b86552..a873a62 100644
--- a/src/mainboard/google/brya/variants/uldren/overridetree.cb
+++ b/src/mainboard/google/brya/variants/uldren/overridetree.cb
@@ -353,6 +353,7 @@
    			end
    		end
    	end
+		device ref pcie_rp7 off end
    	device ref hda on
    		chip drivers/generic/max98357a
    			register "hid" = ""MX98360A""