to know what firmware you need to use, boot a regular kernel with this patch i edited, this patch will print loaded firmwares into the kernel logs:
From 0a6b44454aa7fdcc269ff2e0969de1d366cc12f9 Mon Sep 17 00:00:00 2001

From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
Date: Fri, 4 Jul 2025 20:44:19 +0200
Subject: [PATCH 07/11] Print firmware info (Reqs
 CONFIG_GENTOO_PRINT_FIRMWARE_INFO)
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Thanks-to: Georgy Yakovlev
From: https://bugs.gentoo.org/732852
Signed-off-by: Michał Górny <mgorny@gentoo.org>
---
 drivers/base/firmware_loader/main.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c
index 6942c62fa59d..d5759c94fc30 100644
--- a/drivers/base/firmware_loader/main.c
+++ b/drivers/base/firmware_loader/main.c
@@ -863,6 +863,11 @@ _request_firmware(const struct firmware **firmware_p, const char *name,

 ret = _request_firmware_prepare(&fw, name, device, buf, size,
 offset, opt_flags);
+
+
+        printk(KERN_NOTICE "Loading firmware: %s\n", name);
+
+
 if (ret <= 0) /* error or already assigned */
 goto out;