soc/amd/picasso: add UPD for RV2 USB3 phy setting adjust

add UPD for RV2 USB3 phy setting adjust.

Note: it only for RV2 silicon and not available for RV/PCO.

Usb 3.1 PHY Parameters:
1. RX_EQ_DELTA_IQ_OVRD_VAL
	-Override value for rx_eq_delta_iq. Range 0-0xF
2. RX_EQ_DELTA_IQ_OVRD_EN
	-Enable override value for rx_eq_delta_iq. Range 0-0x1
3. Override value for rx_vref_ctrl. Range 0 - 0x1F
4. Enable override value for rx_vref_ctrl. Range 0 - 0x1
5. Override value for tx_vboost_lvl: 0 - 0x7.
6. Enable override value for tx_vboost_lvl. Range: 0 - 0x1
7. Override value for rx_vref_ctrl. Range 0 - 0x1F
8. Enable override value for rx_vref_ctrl. Range 0 - 0x1
9. Override value for tx_vboost_lvl: 0 - 0x7.
10. Enable override value for tx_vboost_lvl. Range: 0 - 0x1

BUG=b:175192931
TEST=Build/verify the valule will been apply on dirinboz

Change-Id: I1d5f69e840952cc5171af1ce8597628d1bede5cb
Signed-off-by: Chris Wang <chris.wang@amd.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50240
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Kangheui Won <khwon@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

2 files changed, 49 insertions, 0 deletions

diff --git a/src/soc/amd/picasso/chip.h b/src/soc/amd/picasso/chip.h
index 9a7d2a5bfc..313b6c3abf 100644
--- a/src/soc/amd/picasso/chip.h
+++ b/src/soc/amd/picasso/chip.h
@@ -66,6 +66,13 @@ struct usb_pd_control {
 };
 
 #define USB_PORT_COUNT	6
+
+struct __packed usb3_phy_tune {
+	uint8_t rx_eq_delta_iq_ovrd_val;
+	uint8_t rx_eq_delta_iq_ovrd_en;
+};
+/* the RV2 USB3 port count */
+#define RV2_USB3_PORT_COUNT 4
 #define USB_PD_PORT_COUNT 2
 
 enum sd_emmc_driver_strength {
@@ -247,6 +254,30 @@ struct soc_amd_picasso_config {
 		USB_OC_NONE	= 0xf,
 	} usb_port_overcurrent_pin[USB_PORT_COUNT];
 
+	/* RV2 SOC Usb 3.1 PHY Parameters */
+	uint8_t usb3_phy_override;
+	/*
+	 * 1,RX_EQ_DELTA_IQ_OVRD_VAL- Override value for rx_eq_delta_iq. Range 0-0xF
+	 * 2,RX_EQ_DELTA_IQ_OVRD_EN - Enable override value for rx_eq_delta_iq. Range 0-0x1
+	 */
+	struct usb3_phy_tune usb3_phy_tune_params[RV2_USB3_PORT_COUNT];
+	/* Override value for rx_vref_ctrl. Range 0 - 0x1F */
+	uint8_t usb3_rx_vref_ctrl;
+	/* Enable override value for rx_vref_ctrl. Range 0 - 0x1 */
+	uint8_t usb3_rx_vref_ctrl_en;
+	/* Override value for tx_vboost_lvl: 0 - 0x7. */
+	uint8_t usb_3_tx_vboost_lvl;
+	/* Enable override value for tx_vboost_lvl. Range: 0 - 0x1 */
+	uint8_t usb_3_tx_vboost_lvl_en;
+	/* Override value for rx_vref_ctrl. Range 0 - 0x1F.*/
+	uint8_t usb_3_rx_vref_ctrl_x;
+	/* Enable override value for rx_vref_ctrl. Range 0 - 0x1. */
+	uint8_t usb_3_rx_vref_ctrl_en_x;
+	/* Override value for tx_vboost_lvl: 0 - 0x7. */
+	uint8_t usb_3_tx_vboost_lvl_x;
+	/* Enable override value for tx_vboost_lvl. Range: 0 - 0x1. */
+	uint8_t usb_3_tx_vboost_lvl_en_x;
+
 	/* The array index is the general purpose PCIe clock output number. */
 	enum gpp_clk_req_setting gpp_clk_config[GPP_CLK_OUTPUT_COUNT];
 	/* If using an external 48MHz OSC for codec, will disable internal X48M_OSC */
diff --git a/src/soc/amd/picasso/fsp_params.c b/src/soc/amd/picasso/fsp_params.c
index df5e1e61b4..e77cbde419 100644
--- a/src/soc/amd/picasso/fsp_params.c
+++ b/src/soc/amd/picasso/fsp_params.c
@@ -5,6 +5,7 @@
 #include <soc/iomap.h>
 #include <soc/pci_devs.h>
 #include <soc/platform_descriptors.h>
+#include <soc/soc_util.h>
 #include <fsp/api.h>
 #include "chip.h"
 
@@ -126,6 +127,23 @@ static void fsp_usb_oem_customization(FSP_S_CONFIG *scfg,
 		scfg->xhci_oc_pin_select |=
 			(cfg->usb_port_overcurrent_pin[i] & 0xf) << (i * 4);
 	}
+
+	if ((get_silicon_type() == SILICON_RV2) && cfg->usb3_phy_override) {
+		scfg->usb_3_phy_enable = cfg->usb3_phy_override;
+		for (i = 0; i < FSPS_UPD_RV2_USB3_PORT_COUNT; i++) {
+			memcpy(scfg->usb_3_port_phy_tune[i],
+				&cfg->usb3_phy_tune_params[i],
+				sizeof(scfg->usb_3_port_phy_tune[0]));
+		}
+		scfg->usb_3_rx_vref_ctrl = cfg->usb3_rx_vref_ctrl;
+		scfg->usb_3_rx_vref_ctrl_en = cfg->usb3_rx_vref_ctrl_en;
+		scfg->usb_3_tx_vboost_lvl = cfg->usb_3_tx_vboost_lvl;
+		scfg->usb_3_tx_vboost_lvl_en = cfg->usb_3_tx_vboost_lvl_en;
+		scfg->usb_3_rx_vref_ctrl_x = cfg->usb_3_rx_vref_ctrl_x;
+		scfg->usb_3_rx_vref_ctrl_en_x = cfg->usb_3_rx_vref_ctrl_en_x;
+		scfg->usb_3_tx_vboost_lvl_x = cfg->usb_3_tx_vboost_lvl_x;
+		scfg->usb_3_tx_vboost_lvl_en_x = cfg->usb_3_tx_vboost_lvl_en_x;
+	}
 }
 
 static void fsp_assign_ioapic_upds(FSP_S_CONFIG *scfg)