From: Tianling Shen <cnsztl@immortalwrt.org>
Date: Mon, 25 Mar 2024 16:40:37 +0000 (+0800)
Subject: rockchip: remove 'swiotlb' parameter from boot script
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=f90b1d97784b382cf0fb06eec84f7b93cf05436d;p=openwrt%2Fstaging%2Fjow.git

rockchip: remove 'swiotlb' parameter from boot script

We have hardware IOMMU support and this is totally unnecessary.
The given value is also unreasonable, it's too small and causes
kernel panic in some cases:

[ 5706.856473] sdhci-dwcmshc fe310000.mmc: swiotlb buffer is full (sz: 28672 bytes), total 512 (slots), used 498 (slots)
[ 5706.864451] sdhci-dwcmshc fe310000.mmc: swiotlb buffer is full (sz: 65536 bytes), total 512 (slots), used 464 (slots)

This parameter seems to be added by mistake, so remove it.

Fixes: e35c7ab51fd1 ("rockchip: merge bootscript")
Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>
(cherry picked from commit 50e6c8ae8df55532fb70c281bd238b9b1cf1fdaf)
---

diff --git a/target/linux/rockchip/image/mmc.bootscript b/target/linux/rockchip/image/mmc.bootscript
index 60b59e1b6b..ea6ee8c73d 100644
--- a/target/linux/rockchip/image/mmc.bootscript
+++ b/target/linux/rockchip/image/mmc.bootscript
@@ -8,7 +8,7 @@ elif test $stdout = 'serial@ff1a0000' ;
 then serial_addr=',0xff1a0000';
 fi;
 
-setenv bootargs "console=ttyS2,1500000 console=tty1 earlycon=uart8250,mmio32${serial_addr} swiotlb=1 root=PARTUUID=${uuid} rw rootwait";
+setenv bootargs "console=ttyS2,1500000 console=tty1 earlycon=uart8250,mmio32${serial_addr} root=PARTUUID=${uuid} rw rootwait";
 
 load mmc ${devnum}:1 ${kernel_addr_r} kernel.img