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arm64: dts: ti: k3-j721e-som-p0: Enable 8D-8D-8D mode on OSPI

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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>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
Link: https://lore.kernel.org/r/20210305153926.3479-2-p.yadav@ti.com
This commit is contained in:
Pratyush Yadav
2021-03-05 21:09:24 +05:30
committed by Nishanth Menon
parent eb8f6194e8
commit 4c20ee99dd
1 changed files with 2 additions and 2 deletions
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4
arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi
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@@ -174,9 +174,9 @@
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>;