soc/intel/alderlake: Allow devicetree to fill UPD related to TCSS OC
We need to change OC pin for type C USB3 ports and it depends
on the board design. Allowing it to be filled by devicetree will
make it easier to change the mapping based on the board design
BUG=b:184653645
BRANCH=None
TEST=compilation works fine and value of UPD is getting reflected.
Change-Id: I61faa661c12dced27c6cdd7005a61ae8de8621e1
Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52320
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
diff --git a/src/soc/intel/alderlake/chip.h b/src/soc/intel/alderlake/chip.h
index 164d1b9..f7412dc 100644
--- a/src/soc/intel/alderlake/chip.h
+++ b/src/soc/intel/alderlake/chip.h
@@ -9,6 +9,7 @@
#include <intelblocks/gspi.h>
#include <intelblocks/power_limit.h>
#include <intelblocks/pcie_rp.h>
+#include <intelblocks/tcss.h>
#include <soc/gpe.h>
#include <soc/pci_devs.h>
#include <soc/pmc.h>
@@ -87,6 +88,8 @@
uint16_t usb2_wake_enable_bitmap;
/* Wake Enable Bitmap for USB3 ports */
uint16_t usb3_wake_enable_bitmap;
+ /* Program OC pins for TCSS */
+ struct tcss_port_config tcss_ports[MAX_TYPE_C_PORTS];
/* SATA related */
uint8_t SataEnable;
diff --git a/src/soc/intel/alderlake/fsp_params.c b/src/soc/intel/alderlake/fsp_params.c
index 19afbc4..2ab1825 100644
--- a/src/soc/intel/alderlake/fsp_params.c
+++ b/src/soc/intel/alderlake/fsp_params.c
@@ -184,6 +184,11 @@
}
}
+ for (i = 0; i < ARRAY_SIZE(config->tcss_ports); i++) {
+ if (config->tcss_ports[i].enable)
+ params->CpuUsb3OverCurrentPin[i] = config->tcss_ports[i].ocpin;
+ }
+
/* Enable xDCI controller if enabled in devicetree and allowed */
dev = pcidev_path_on_root(PCH_DEVFN_USBOTG);
if (dev) {
diff --git a/src/soc/intel/alderlake/include/soc/usb.h b/src/soc/intel/alderlake/include/soc/usb.h
index 846849a..e339c72 100644
--- a/src/soc/intel/alderlake/include/soc/usb.h
+++ b/src/soc/intel/alderlake/include/soc/usb.h
@@ -135,4 +135,20 @@
.tx_downscale_amp = 0x00, \
}
+struct tcss_port_config {
+ uint8_t enable;
+ uint8_t ocpin;
+};
+
+#define TCSS_PORT_EMPTY { \
+ .enable = 0, \
+ .ocpin = OC_SKIP, \
+}
+
+#define TCSS_PORT_DEFAULT(pin) { \
+ .enable = 1, \
+ .ocpin = (pin), \
+}
+
+
#endif