linux-kernel - [PATCH v2 1/9] ARM: dts: zynq-7000: drop useless 'dma-channels/requests' properties

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Message-Id: <20220430121902.59895-2-krzysztof.kozlowski@linaro.org>
Date:   Sat, 30 Apr 2022 14:18:54 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Dinh Nguyen <dinguyen@...nel.org>,
        Michal Simek <michal.simek@...inx.com>,
        Liviu Dudau <liviu.dudau@....com>,
        Sudeep Holla <sudeep.holla@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Broadcom Kernel Team <bcm-kernel-feedback-list@...adcom.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Rob Herring <robh@...nel.org>
Subject: [PATCH v2 1/9] ARM: dts: zynq-7000: drop useless 'dma-channels/requests' properties

The pl330 DMA controller provides number of DMA channels and requests
through its registers, so duplicating this information (with a chance of
mistakes) in DTS is pointless.  Additionally the DTS used always wrong
property names which causes DT schema check failures - the bindings
documented 'dma-channels' and 'dma-requests' properties without leading
hash sign.

Reported-by: Rob Herring <robh@...nel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

---

Not adding acquired review tag because of significant change.
---
 arch/arm/boot/dts/zynq-7000.dtsi | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi
index 47c2a4b14c06..c193264a86ff 100644
--- a/arch/arm/boot/dts/zynq-7000.dtsi
+++ b/arch/arm/boot/dts/zynq-7000.dtsi
@@ -343,8 +343,6 @@ dmac_s: dmac@...03000 {
 			             <0 40 4>, <0 41 4>,
 			             <0 42 4>, <0 43 4>;
 			#dma-cells = <1>;
-			#dma-channels = <8>;
-			#dma-requests = <4>;
 			clocks = <&clkc 27>;
 			clock-names = "apb_pclk";
 		};
-- 
2.32.0