From: Md Sadre Alam <md.alam@oss.qualcomm.com>
To: Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Md Sadre Alam <md.alam@oss.qualcomm.com>,
Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Subject: [PATCH v2 1/3] arm64: dts: qcom: ipq9574-rdp-common: Enable quad SPI mode for SPI-NAND
Date: Fri, 07 Aug 2026 22:05:31 +0530 [thread overview]
Message-ID: <20260807-quad_dts-v2-1-6f578d4152b7@oss.qualcomm.com> (raw)
In-Reply-To: <20260807-quad_dts-v2-0-6f578d4152b7@oss.qualcomm.com>
Set the SPI-NAND device node to use 4-bit transmit and receive bus widths.
The board supports quad SPI transfers, but the device tree currently does
not describe the wider bus. Add spi-tx-bus-width and spi-rx-bus-width so
the controller and flash can use quad mode instead of single-bit transfers.
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Md Sadre Alam <md.alam@oss.qualcomm.com>
---
arch/arm64/boot/dts/qcom/ipq9574-rdp-common.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/ipq9574-rdp-common.dtsi b/arch/arm64/boot/dts/qcom/ipq9574-rdp-common.dtsi
index 62877b46f9b3..86138529ba77 100644
--- a/arch/arm64/boot/dts/qcom/ipq9574-rdp-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq9574-rdp-common.dtsi
@@ -249,6 +249,8 @@ flash@0 {
nand-ecc-engine = <&qpic_nand>;
nand-ecc-strength = <4>;
nand-ecc-step-size = <512>;
+ spi-rx-bus-width = <4>;
+ spi-tx-bus-width = <4>;
};
};
--
2.34.1
next prev parent reply other threads:[~2026-08-07 16:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-07 16:35 [PATCH v2 0/3] Enable quad SPI mode for SPI-NAND on IPQ RDP boards Md Sadre Alam
2026-08-07 16:35 ` Md Sadre Alam [this message]
2026-08-07 16:45 ` [PATCH v2 1/3] arm64: dts: qcom: ipq9574-rdp-common: Enable quad SPI mode for SPI-NAND sashiko-bot
2026-08-07 16:35 ` [PATCH v2 2/3] arm64: dts: qcom: ipq5424-rdp466: " Md Sadre Alam
2026-08-07 16:50 ` sashiko-bot
2026-08-07 16:35 ` [PATCH v2 3/3] arm64: dts: qcom: ipq5332-rdp-common: " Md Sadre Alam
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