lkml.org 
[lkml]   [2021]   [Mar]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] arm64: dts: ensure backward compatibility of the AP807 Xenon
Date
A recent switch to a dedicated AP807 compatible string for the Xenon
SD/MMC controller result in the driver not being probed when
using updated device tree with the older kernel revisions.
It may also be problematic for other OSs/firmware that use
Linux device tree sources as a reference. Resolve the problem
with backward compatibility by restoring a previous compatible
string as secondary one.

Signed-off-by: Marcin Wojtas <mw@semihalf.com>
---
arch/arm64/boot/dts/marvell/armada-ap807.dtsi | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/marvell/armada-ap807.dtsi b/arch/arm64/boot/dts/marvell/armada-ap807.dtsi
index d9bbbfa4b4eb..4a23f65d475f 100644
--- a/arch/arm64/boot/dts/marvell/armada-ap807.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-ap807.dtsi
@@ -29,6 +29,7 @@ cpu_clk: clock-cpu {
};

&ap_sdhci0 {
- compatible = "marvell,armada-ap807-sdhci";
+ compatible = "marvell,armada-ap807-sdhci",
+ "marvell,armada-ap806-sdhci"; /* Backward compatibility */
};

--
2.29.0
\
 
 \ /
  Last update: 2021-03-22 01:41    [W:0.102 / U:0.508 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site