From: Kishon Vijay Abraham I <kishon@ti.com>
Date: Wed, 7 Jun 2017 09:37:47 +0000 (+0530)
Subject: ARM: dts: dra7: Add "max-frequency" property to MMC dt nodes
X-Git-Tag: v4.14-rc1~66^2~26^2~16^2~2
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=866b5e447f1ad3a0d72c139fabe3dd71f351f361;p=linux.git

ARM: dts: dra7: Add "max-frequency" property to MMC dt nodes

Add "max-frequency" property to MMC dt nodes and set the
maximum frequency to 192MHz for MMC1/MMC2, 64MHz for MMC3
and 192MHz for MMC4. pdata quirks must be utilized to
detect presence of rev 1.1/1.0 of silicon and adjust
maximum frequencies as per restrictions documented in i843.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---

diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
index 25908dd338ee..abb1fa1acb42 100644
--- a/arch/arm/boot/dts/dra7.dtsi
+++ b/arch/arm/boot/dts/dra7.dtsi
@@ -1037,6 +1037,7 @@ mmc1: mmc@4809c000 {
 			dma-names = "tx", "rx";
 			status = "disabled";
 			pbias-supply = <&pbias_mmc_reg>;
+			max-frequency = <192000000>;
 		};
 
 		mmc2: mmc@480b4000 {
@@ -1048,6 +1049,7 @@ mmc2: mmc@480b4000 {
 			dmas = <&sdma_xbar 47>, <&sdma_xbar 48>;
 			dma-names = "tx", "rx";
 			status = "disabled";
+			max-frequency = <192000000>;
 		};
 
 		mmc3: mmc@480ad000 {
@@ -1059,6 +1061,8 @@ mmc3: mmc@480ad000 {
 			dmas = <&sdma_xbar 77>, <&sdma_xbar 78>;
 			dma-names = "tx", "rx";
 			status = "disabled";
+			/* Errata i887 limits max-frequency of MMC3 to 64 MHz */
+			max-frequency = <64000000>;
 		};
 
 		mmc4: mmc@480d1000 {
@@ -1070,6 +1074,7 @@ mmc4: mmc@480d1000 {
 			dmas = <&sdma_xbar 57>, <&sdma_xbar 58>;
 			dma-names = "tx", "rx";
 			status = "disabled";
+			max-frequency = <192000000>;
 		};
 
 		mmu0_dsp1: mmu@40d01000 {