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Add kernel 5.15 for RPI4 support

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Ycarus (Yannick Chabanois) 2021-11-24 18:32:01 +01:00
parent e961d478cd
commit df88a19bbd
638 changed files with 239907 additions and 0 deletions
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30
root/target/linux/bcm27xx/patches-5.15/0152-arm-bcm2835-DMA-can-only-address-1GB.patch Normal file
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@ -0,0 +1,30 @@
From 129c8b004eb7c432bcb9fc089c9a49ca82039700 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Wed, 29 May 2019 15:47:42 +0100
Subject: [PATCH 152/634] arm: bcm2835: DMA can only address 1GB
The legacy peripherals can only address the first gigabyte of RAM, so
ensure that DMA allocations are restricted to that region.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
arch/arm/mach-bcm/board_bcm2835.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/arm/mach-bcm/board_bcm2835.c b/arch/arm/mach-bcm/board_bcm2835.c
index 9bd9842da59f..7d59a9364175 100644
--- a/arch/arm/mach-bcm/board_bcm2835.c
+++ b/arch/arm/mach-bcm/board_bcm2835.c
@@ -114,6 +114,9 @@ static const char * const bcm2835_compat[] = {
};
DT_MACHINE_START(BCM2835, "BCM2835")
+#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
+ .dma_zone_size = SZ_1G,
+#endif
.map_io = bcm2835_map_io,
.init_machine = bcm2835_init,
.dt_compat = bcm2835_compat,
--
2.33.1