From ec2875e38f0d376375c6ddfcb2fe84b81453d076 Mon Sep 17 00:00:00 2001
From: Varun Upadhyay <varun.upadhyay@intel.com>
Date: Wed, 24 Sep 2025 09:42:15 +0530
Subject: [PATCH] mb/google/ocelot/var/ojal: Enable FPS and update FW config

This patch enables fingerprint sensor in devicetree for ojal and updates FW config for GPIO's config according to schematics revision 0.9.
RDC kit no:840138

BUG=b:437459757
TEST=Build ojal board and check dmesg for FPS detection.

Change-Id: I44a24423f4d5b1fc85a5b3bb51f2d6646c82f9dc
Signed-off-by: Varun Upadhyay <varun.upadhyay@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/89324
Reviewed-by: Pranava Y N <pranavayn@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 .../google/ocelot/variants/ojal/fw_config.c   | 48 +++++++++++++++++++
 .../ocelot/variants/ojal/overridetree.cb      | 17 +++++++
 2 files changed, 65 insertions(+)

diff --git a/src/mainboard/google/ocelot/variants/ojal/fw_config.c b/src/mainboard/google/ocelot/variants/ojal/fw_config.c
index d374cf1dba..36bc5183a9 100644
--- a/src/mainboard/google/ocelot/variants/ojal/fw_config.c
+++ b/src/mainboard/google/ocelot/variants/ojal/fw_config.c
@@ -93,6 +93,45 @@ static const struct pad_config touchpad_i2c_disable_pads[] = {
 	PAD_NC(GPP_VGPIO3_THC1, NONE),
 };
 
+static const struct pad_config fp_disable_pads[] = {
+	/* GPP_C15:     FPS_RST_N */
+	PAD_NC(GPP_C15, NONE),
+	/* GPP_E19:     FPS_SOC_INT_L */
+	PAD_NC(GPP_E19, NONE),
+	/* GPP_E20:     FPMCU_FW_UPDATE */
+	PAD_NC(GPP_E20, NONE),
+	/* GPP_F14:     GPP_F14_GPSI0A_MOSI */
+	PAD_NC(GPP_F14, NONE),
+	/* GPP_F15:     GPP_F15_GSPI0A_MISO */
+	PAD_NC(GPP_F15, NONE),
+	/* GPP_F16:     GPP_F16_GPSI0A_CLK */
+	PAD_NC(GPP_F16, NONE),
+	/* GPP_F18:     GPP_F18_GSPI0_CS0 */
+	PAD_NC(GPP_F18, NONE),
+};
+
+static const struct pad_config fp_enable_pads[] = {
+	/* GPP_C15:     FPS_RST_N */
+	PAD_CFG_GPO_LOCK(GPP_C15, 1, LOCK_CONFIG),
+	/* GPP_E19:     FPS_SOC_INT_L */
+	PAD_CFG_GPI_IRQ_WAKE(GPP_E19, NONE, PWROK, LEVEL, INVERT),
+	/* GPP_E20:     FPMCU_FW_UPDATE */
+	PAD_CFG_GPO_LOCK(GPP_E20, 0, LOCK_CONFIG),
+	/* GPP_F14:     GPP_F14_GPSI0A_MOSI */
+	PAD_CFG_NF(GPP_F14, NONE, DEEP, NF8),
+	/* GPP_F15:     GPP_F15_GSPI0A_MISO */
+	PAD_CFG_NF(GPP_F15, NONE, DEEP, NF8),
+	/* GPP_F16:     GPP_F16_GPSI0A_CLK */
+	PAD_CFG_NF(GPP_F16, NONE, DEEP, NF8),
+	/* GPP_F18:     GPP_F18_GSPI0_CS0 */
+	PAD_CFG_NF(GPP_F18, NONE, DEEP, NF8),
+};
+
+static const struct pad_config pre_mem_fp_enable_pads[] = {
+	/* GPP_C15:     FPS_RST_N */
+	PAD_CFG_GPO(GPP_C15, 0, DEEP),
+};
+
 void fw_config_configure_pre_mem_gpio(void)
 {
 	if (!fw_config_is_provisioned()) {
@@ -105,6 +144,9 @@ void fw_config_configure_pre_mem_gpio(void)
 	} else if (fw_config_probe(FW_CONFIG(STORAGE, STORAGE_UNKNOWN))) {
 		GPIO_CONFIGURE_PADS(pre_mem_gen4_ssd_pwr_pads);
 	}
+
+	if (fw_config_probe(FW_CONFIG(FP, FP_PRESENT)))
+		GPIO_CONFIGURE_PADS(pre_mem_fp_enable_pads);
 }
 
 void fw_config_gpio_padbased_override(struct pad_config *padbased_table)
@@ -137,4 +179,10 @@ void fw_config_gpio_padbased_override(struct pad_config *padbased_table)
 	} else {
 		GPIO_PADBASED_OVERRIDE(padbased_table, touchpad_i2c_disable_pads);
 	}
+
+	if (fw_config_probe(FW_CONFIG(FP, FP_PRESENT))) {
+		GPIO_PADBASED_OVERRIDE(padbased_table, fp_enable_pads);
+	} else {
+		GPIO_PADBASED_OVERRIDE(padbased_table, fp_disable_pads);
+	}
 }
diff --git a/src/mainboard/google/ocelot/variants/ojal/overridetree.cb b/src/mainboard/google/ocelot/variants/ojal/overridetree.cb
index bf174848ef..641acbf9ea 100644
--- a/src/mainboard/google/ocelot/variants/ojal/overridetree.cb
+++ b/src/mainboard/google/ocelot/variants/ojal/overridetree.cb
@@ -284,6 +284,23 @@ chip soc/intel/pantherlake
 			end
 		end
 
+		device ref gspi0 on
+			chip drivers/spi/acpi
+				register "name" = ""CRFP""
+				register "hid" = "ACPI_DT_NAMESPACE_HID"
+				register "uid" = "1"
+				register "compat_string" = ""google,cros-ec-spi""
+				register "irq" = "ACPI_IRQ_WAKE_LEVEL_LOW(GPP_E19_IRQ)"
+				register "wake" = "GPE0_DW2_19"
+				register "has_power_resource" = "true"
+				register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C15)"
+				register "enable_delay_ms" = "3"
+				device spi 0 on
+					probe FP FP_PRESENT
+				end
+			end # FPMCU
+		end
+
 		device ref smbus on end
 	end
 end