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>
Subject: [PATCH 3/3] arm64: dts: qcom: ipq5332-rdp-common: Enable quad SPI mode for SPI-NAND
Date: Thu, 16 Jul 2026 11:25:14 +0530 [thread overview]
Message-ID: <20260716-quad_dts-v1-3-74d86792944a@oss.qualcomm.com> (raw)
In-Reply-To: <20260716-quad_dts-v1-0-74d86792944a@oss.qualcomm.com>
The SPI-NAND device on the IPQ5332 RDP supports 4-bit data transfers, but
the device tree does not describe the bus width, so transfers use the
default single-bit mode.
Set spi-rx-bus-width and spi-tx-bus-width to 4 to enable quad read and
write transfers and improve SPI-NAND throughput.
Signed-off-by: Md Sadre Alam <md.alam@oss.qualcomm.com>
---
arch/arm64/boot/dts/qcom/ipq5332-rdp-common.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/ipq5332-rdp-common.dtsi b/arch/arm64/boot/dts/qcom/ipq5332-rdp-common.dtsi
index 3bbf748f2e5c..6f5b193a204b 100644
--- a/arch/arm64/boot/dts/qcom/ipq5332-rdp-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq5332-rdp-common.dtsi
@@ -141,5 +141,7 @@ 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:[~2026-07-16 5:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-16 5:55 [PATCH 0/3] Enable quad SPI mode for SPI-NAND on IPQ RDP boards Md Sadre Alam
2026-07-16 5:55 ` [PATCH 1/3] arm64: dts: qcom: ipq9574-rdp-common: Enable quad SPI mode for SPI-NAND Md Sadre Alam
2026-07-16 17:52 ` Konrad Dybcio
2026-07-16 5:55 ` [PATCH 2/3] arm64: dts: qcom: ipq5424-rdp466: " Md Sadre Alam
2026-07-16 17:52 ` Konrad Dybcio
2026-07-16 5:55 ` Md Sadre Alam [this message]
2026-07-16 17:52 ` [PATCH 3/3] arm64: dts: qcom: ipq5332-rdp-common: " Konrad Dybcio
2026-07-16 6:47 ` [PATCH 0/3] Enable quad SPI mode for SPI-NAND on IPQ RDP boards Mukesh Ojha
2026-08-07 16:41 ` Md Sadre Alam
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