From 9a86b9f729fa265185e95ea73a5394b72f6b353e Mon Sep 17 00:00:00 2001
From: Hari L <haril@qualcomm.corp-partner.google.com>
Date: Tue, 10 Mar 2026 17:23:12 +0530
Subject: [PATCH] mb/google/bluey: Integrate ADSP load and LPASS bring-up into
 charging flow
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Load ADSP firmware and then bring up LPASS/Q6 during the Bluey charging sequence.
This ensures ADSP‑dependent fast charging works reliably.

TEST:
 - Built and booted image.serial.bin on X1P42100.
 - Verified ADSP DTB and firmware load over UART.
 - Verified Q6 and LPASS init during cold boot.
 - Verified charging flow: device entered charging mode, battery current (~3550 mA)
   reported, and CRD RED LED glowed.

Change-Id: I6a1326f4271c5121cd7284d64b2912505b2a93a2
Signed-off-by: Hari L <haril@qualcomm.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91564
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Jayvik Desai <jayvik@google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/mainboard/google/bluey/board.h     |  1 +
 src/mainboard/google/bluey/charging.c  | 18 ++++++++++++++++++
 src/mainboard/google/bluey/mainboard.c |  3 +--
 3 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/src/mainboard/google/bluey/board.h b/src/mainboard/google/bluey/board.h
index 04ef0ca3c1..b7084a30d5 100644
--- a/src/mainboard/google/bluey/board.h
+++ b/src/mainboard/google/bluey/board.h
@@ -65,5 +65,6 @@ void configure_debug_access_port(void);
 void enable_slow_battery_charging(void);
 void disable_slow_battery_charging(void);
 void launch_charger_applet(void);
+void enable_fast_battery_charging(void);
 
 #endif /* MAINBOARD_GOOGLE_BLUEY_BOARD_H */
diff --git a/src/mainboard/google/bluey/charging.c b/src/mainboard/google/bluey/charging.c
index c8b1126a42..a499ca5888 100644
--- a/src/mainboard/google/bluey/charging.c
+++ b/src/mainboard/google/bluey/charging.c
@@ -5,6 +5,8 @@
 #include <delay.h>
 #include <ec/google/chromeec/ec.h>
 #include <reset.h>
+#include <soc/adsp.h>
+#include <soc/lpass.h>
 #include <soc/pmic.h>
 #include <soc/qcom_spmi.h>
 #include <soc/qcom_tsens.h>
@@ -276,3 +278,19 @@ void disable_slow_battery_charging(void)
 	spmi_write8(SMB1_CHGR_MAX_FCC_CFG, FCC_DISABLE);
 	spmi_write8(SMB2_CHGR_MAX_FCC_CFG, FCC_DISABLE);
 }
+
+/*
+ * Enable fast battery charging with ADSP support.
+ *
+ * This function loads ADSP firmware and configures fast charging.
+ */
+void enable_fast_battery_charging(void)
+{
+	/* Load ADSP firmware first */
+	adsp_fw_load();
+
+	/* Bring up LPASS/QDSP6 (ADSP) for ADSP-dependent charging support */
+	if (lpass_bring_up() != CB_SUCCESS) {
+		printk(BIOS_ERR, "LPASS bring-up failed; skipping fast charging.\n");
+	}
+}
diff --git a/src/mainboard/google/bluey/mainboard.c b/src/mainboard/google/bluey/mainboard.c
index 1b9b9955a2..306fefafe9 100644
--- a/src/mainboard/google/bluey/mainboard.c
+++ b/src/mainboard/google/bluey/mainboard.c
@@ -188,8 +188,7 @@ static void trigger_critical_battery_shutdown(void)
  */
 static void handle_low_power_charging_boot(void)
 {
-	/* TODO: enable fast charging */
-	enable_slow_battery_charging();
+	enable_fast_battery_charging();
 
 	/*
 	 * Disable the lightbar for Low-Battery or Off-Mode charging sequences.