[PATCH v2 2/3] arm64: dts: imx8mn-tqma8mqnl: restrict clock for SPI-NOR flash

[Alexander Stein <alexander.stein@ew.tq-group.com>]

From: Markus Niebel <Markus.Niebel@ew.tq-group.com>

The FlexSPI controller uses quad SPI with internal clock recovery.
The i.MX 8M Nano Applications Processor Datasheet for Industrial Products,
Rev. 5, 09/2022 lists a maximum FlexSPI frequency of 66.666666 MHz for
that mode.

Fixes: 3e56e354db6d ("arm64: dts: freescale: add initial device tree for TQMa8MQNL with i.MX8MN")
Signed-off-by: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
---
Changes in v2:
* Clarify which datasheet is referred to
* Add Fixes tag

 arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl.dtsi
index 48a687926aa1b..c88d83243097f 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl.dtsi
@@ -63,7 +63,7 @@ &flexspi {
 	flash0: flash@0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <84000000>;
+		spi-max-frequency = <66666666>;
 		spi-tx-bus-width = <1>;
 		spi-rx-bus-width = <4>;
 		vcc-supply = <&buck5_reg>;
-- 
2.55.0