linux-kernel - [PATCH v2 2/5] dmaengine: qcom: gpi: Document preferred SM6350 binding

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Date:   Tue, 18 Oct 2022 19:03:49 -0400
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Vinod Koul <vkoul@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, dmaengine@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Richard Acayan <mailingradian@...il.com>
Subject: [PATCH v2 2/5] dmaengine: qcom: gpi: Document preferred SM6350 binding

Devices with ee offset of 0x10000 should rather bind with SM6350
compatible, so the list will not unnecessarily grow for compatible
devices.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Acked-by: Richard Acayan <mailingradian@...il.com>
---
 drivers/dma/qcom/gpi.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/dma/qcom/gpi.c b/drivers/dma/qcom/gpi.c
index f8e19e6e6117..061add832295 100644
--- a/drivers/dma/qcom/gpi.c
+++ b/drivers/dma/qcom/gpi.c
@@ -2286,13 +2286,14 @@ static int gpi_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id gpi_of_match[] = {
-	{ .compatible = "qcom,sc7280-gpi-dma", .data = (void *)0x10000 },
 	{ .compatible = "qcom,sdm845-gpi-dma", .data = (void *)0x0 },
 	{ .compatible = "qcom,sm6350-gpi-dma", .data = (void *)0x10000 },
 	/*
-	 * Deprecated, devices with ee_offset = 0 should use sdm845-gpi-dma as
-	 * fallback and not need their own entries here.
+	 * Do not grow the list for compatible devices. Instead use
+	 * qcom,sdm845-gpi-dma (for ee_offset = 0x0) or qcom,sm6350-gpi-dma
+	 * (for ee_offset = 0x10000).
 	 */
+	{ .compatible = "qcom,sc7280-gpi-dma", .data = (void *)0x10000 },
 	{ .compatible = "qcom,sm8150-gpi-dma", .data = (void *)0x0 },
 	{ .compatible = "qcom,sm8250-gpi-dma", .data = (void *)0x0 },
 	{ .compatible = "qcom,sm8350-gpi-dma", .data = (void *)0x10000 },
-- 
2.34.1