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openwrt/target/linux/bcm27xx/patches-6.6/950-0193-Initialise-rpi-firmware-before-clk-bcm2835.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

48 lines
1.6 KiB
Diff

From 6f34d91712c05fa1795c5a159c3de595e7dc83aa Mon Sep 17 00:00:00 2001
From: Luke Hinds <7058938+lukehinds@users.noreply.github.com>
Date: Wed, 22 Jan 2020 16:03:00 +0000
Subject: [PATCH 0193/1085] Initialise rpi-firmware before clk-bcm2835
The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted
Platform Module) having been registered when it initialises; otherwise
it assumes there is no TPM. It has been observed on BCM2835 that IMA
is initialised before TPM, and that initialising the BCM2835 clock
driver before the firmware driver has the effect of reversing this
order.
Change the firmware driver to initialise at core_initcall, delaying the
BCM2835 clock driver to postcore_initcall.
See: https://github.com/raspberrypi/linux/issues/3291
https://github.com/raspberrypi/linux/pull/3297
Signed-off-by: Luke Hinds <lhinds@redhat.com>
Co-authored-by: Phil Elwell <phil@raspberrypi.org>
---
drivers/clk/bcm/clk-bcm2835.c | 2 +-
drivers/firmware/raspberrypi.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -2438,7 +2438,7 @@ static int __init __bcm2835_clk_driver_i
{
return platform_driver_register(&bcm2835_clk_driver);
}
-core_initcall(__bcm2835_clk_driver_init);
+postcore_initcall(__bcm2835_clk_driver_init);
MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
MODULE_DESCRIPTION("BCM2835 clock driver");
--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c
@@ -525,7 +525,7 @@ out2:
out1:
return ret;
}
-subsys_initcall(rpi_firmware_init);
+core_initcall(rpi_firmware_init);
static void __init rpi_firmware_exit(void)
{