linux-kernel - [PATCH] arm64: dts: mt7622: specify the number of DMA requests

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Date:   Fri, 29 Apr 2022 09:42:25 +0100
From:   Rui Salvaterra <rsalvaterra@...il.com>
To:     linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     matthias.bgg@...il.com, ryder.lee@...iatek.com,
        daniel@...rotopia.org, Rui Salvaterra <rsalvaterra@...il.com>
Subject: [PATCH] arm64: dts: mt7622: specify the number of DMA requests

The MT7622 device tree never bothered to specify the number of virtual DMA
channels for the HSDMA controller, always falling back to the default value of
3. Make this value explicit, in order to avoid the following dmesg notification:

mtk_hsdma 1b007000.dma-controller: Using 3 as missing dma-requests property

Signed-off-by: Rui Salvaterra <rsalvaterra@...il.com>
---
 arch/arm64/boot/dts/mediatek/mt7622.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
index 3d6eaf6dd078..5551f004945b 100644
--- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
@@ -924,6 +924,7 @@ hsdma: dma-controller@...07000 {
 		clock-names = "hsdma";
 		power-domains = <&scpsys MT7622_POWER_DOMAIN_ETHSYS>;
 		#dma-cells = <1>;
+		dma-requests = <3>;
 	};
 
 	eth: ethernet@...00000 {
-- 
2.36.0