From: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Date: Wed, 22 Jul 2020 08:27:34 +0000 (-0600)
Subject: arm64: zynqmp: Fix zynqmp mini qspi max frequency
X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=d93fbac512a44bd05bae9db5834b22945911d70c;p=u-boot.git

arm64: zynqmp: Fix zynqmp mini qspi max frequency

For zynqmp qspi, frequencies up to 40MHz will work irrespective
of feedback clock enabled or disabled. If we want higher than
40Mhz the feedback clock should be enabled.

With spi-max-frequency 108MHz it is not working when the feedback
clock is disabled. Change it to 40MHz so that it works irrespective
of feedback clock enabled or disabled.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Acked-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

diff --git a/arch/arm/dts/zynqmp-mini-qspi.dts b/arch/arm/dts/zynqmp-mini-qspi.dts
index a76e640466..9b4320fe6e 100644
--- a/arch/arm/dts/zynqmp-mini-qspi.dts
+++ b/arch/arm/dts/zynqmp-mini-qspi.dts
@@ -70,7 +70,7 @@
 		reg = <0x0>;
 		spi-tx-bus-width = <1>;
 		spi-rx-bus-width = <4>;
-		spi-max-frequency = <108000000>;
+		spi-max-frequency = <40000000>;
 	};
 };