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[1/3] arm64: dts: ti: k3-j721e-som-p0: Enable 8D-8D-8D mode on OSPI

Message ID 20210301195850.31868-2-p.yadav@ti.com
State Superseded
Headers show
Series [1/3] arm64: dts: ti: k3-j721e-som-p0: Enable 8D-8D-8D mode on OSPI | expand

Commit Message

Pratyush Yadav March 1, 2021, 7:58 p.m. UTC
Set the Tx bus width to 8 so 8D-8D-8D mode can be selected. Change the
frequency to 25 MHz. This is the frequency that the flash has been
successfully tested with in Octal DTR mode. The total performance should
still increase since 8D-8D-8D mode should be at least twice as fast as
1S-1S-8S mode.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
---
 arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi
index 57720e6a04c5..2fee2906183d 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi
@@ -174,9 +174,9 @@  &ospi0 {
 	flash@0{
 		compatible = "jedec,spi-nor";
 		reg = <0x0>;
-		spi-tx-bus-width = <1>;
+		spi-tx-bus-width = <8>;
 		spi-rx-bus-width = <8>;
-		spi-max-frequency = <40000000>;
+		spi-max-frequency = <25000000>;
 		cdns,tshsl-ns = <60>;
 		cdns,tsd2d-ns = <60>;
 		cdns,tchsh-ns = <60>;