From: Stefan Agner <stefan@agner.ch>
Date: Sat, 2 Apr 2016 06:13:40 +0000 (-0700)
Subject: ARM: dts: vf-colibri: increase NAND clock speed
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=6d20b24a2b3edc361e651ab87de5071d4b1b24c3;p=linux-beck.git

ARM: dts: vf-colibri: increase NAND clock speed

The NAND flash memory populated on Colibri VF61 allows faster NAND
timings than the flash memory on VF50. Additionally, due to divider
limitations, VF61 did clock the flash even slower than VF50. Assign
the NFC clock in the module specific device trees vf500-colibri.dtsi
and vf610-colibri.dtsi respectively.

This increases raw read speed on Colibri VF61 by about 20%.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---

diff --git a/arch/arm/boot/dts/vf-colibri.dtsi b/arch/arm/boot/dts/vf-colibri.dtsi
index 7529dd7f6db1..226a86ffd3c9 100644
--- a/arch/arm/boot/dts/vf-colibri.dtsi
+++ b/arch/arm/boot/dts/vf-colibri.dtsi
@@ -130,8 +130,6 @@
 };
 
 &nfc {
-	assigned-clocks = <&clks VF610_CLK_NFC>;
-	assigned-clock-rates = <33000000>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_nfc>;
 	status = "okay";
diff --git a/arch/arm/boot/dts/vf500-colibri.dtsi b/arch/arm/boot/dts/vf500-colibri.dtsi
index 3fe1f48c2aec..1a8a0efa19a6 100644
--- a/arch/arm/boot/dts/vf500-colibri.dtsi
+++ b/arch/arm/boot/dts/vf500-colibri.dtsi
@@ -69,6 +69,11 @@
 	};
 };
 
+&nfc {
+	assigned-clocks = <&clks VF610_CLK_NFC>;
+	assigned-clock-rates = <33000000>;
+};
+
 &iomuxc {
 	vf610-colibri {
 		pinctrl_touchctrl_idle: touchctrl_idle {
diff --git a/arch/arm/boot/dts/vf610-colibri.dtsi b/arch/arm/boot/dts/vf610-colibri.dtsi
index ab4a29f95593..9ec9e337f5a8 100644
--- a/arch/arm/boot/dts/vf610-colibri.dtsi
+++ b/arch/arm/boot/dts/vf610-colibri.dtsi
@@ -50,3 +50,8 @@
 		reg = <0x80000000 0x10000000>;
 	};
 };
+
+&nfc {
+	assigned-clocks = <&clks VF610_CLK_NFC>;
+	assigned-clock-rates = <50000000>;
+};