From: Neal Frager <neal.frager@amd.com>
Date: Thu, 31 Aug 2023 14:27:53 +0000 (+0200)
Subject: arm64: zynqmp: Add output-enable pins to SOMs
X-Git-Url: http://git.dujemihanovic.xyz/img/sics.gif?a=commitdiff_plain;h=771635f6b0f5bc71d85beb7d994b1c66bf36f6ff;p=u-boot.git

arm64: zynqmp: Add output-enable pins to SOMs

Now that the zynqmp pinctrl driver supports the tri-state registers, make
sure that the pins requiring output-enable are configured appropriately for
SOMs.

Without it, all tristate setting for MIOs, which are not related to SOM
itself, are using default configuration which is not correct setting.
It means SDs, USBs, ethernet, etc. are not working properly.

In past it was fixed through calling tristate configuration via bootcmd:
usb_init=mw 0xFF180208 2020
kv260_gem3=mw 0xFF18020C 0xFC0 && gpio toggle gpio@ff0a000038 && \
  gpio toggle gpio@ff0a000038

Signed-off-by: Neal Frager <neal.frager@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/7ecd98b2a302c5c6628e0234482f23c38e721fd6.1693492064.git.michal.simek@amd.com
---

diff --git a/arch/arm/dts/zynqmp-sck-kr-g-revA.dts b/arch/arm/dts/zynqmp-sck-kr-g-revA.dts
index d318773bd9..30a0230d47 100644
--- a/arch/arm/dts/zynqmp-sck-kr-g-revA.dts
+++ b/arch/arm/dts/zynqmp-sck-kr-g-revA.dts
@@ -250,6 +250,7 @@
 		conf-tx {
 			pins = "MIO36";
 			bias-disable;
+			output-enable;
 		};
 
 		mux {
@@ -301,6 +302,7 @@
 		conf-bootstrap {
 			pins = "MIO45", "MIO47", "MIO49";
 			bias-disable;
+			output-enable;
 			low-power-disable;
 		};
 
@@ -308,6 +310,7 @@
 			pins = "MIO38", "MIO39", "MIO40",
 				"MIO41", "MIO42", "MIO43";
 			bias-disable;
+			output-enable;
 			low-power-enable;
 		};
 
@@ -316,6 +319,7 @@
 			slew-rate = <SLEW_RATE_SLOW>;
 			power-source = <IO_STANDARD_LVCMOS18>;
 			bias-disable;
+			output-enable;
 		};
 
 		mux-mdio {
@@ -346,6 +350,7 @@
 			pins = "MIO54", "MIO56", "MIO57", "MIO58", "MIO59",
 			"MIO60", "MIO61", "MIO62", "MIO63";
 			bias-disable;
+			output-enable;
 			drive-strength = <4>;
 			slew-rate = <SLEW_RATE_SLOW>;
 		};
@@ -373,6 +378,7 @@
 			pins = "MIO66", "MIO68", "MIO69", "MIO70", "MIO71",
 			"MIO72", "MIO73", "MIO74", "MIO75";
 			bias-disable;
+			output-enable;
 			drive-strength = <4>;
 			slew-rate = <SLEW_RATE_SLOW>;
 		};
diff --git a/arch/arm/dts/zynqmp-sck-kr-g-revB.dts b/arch/arm/dts/zynqmp-sck-kr-g-revB.dts
index 69dba0761b..8f4c52d6d6 100644
--- a/arch/arm/dts/zynqmp-sck-kr-g-revB.dts
+++ b/arch/arm/dts/zynqmp-sck-kr-g-revB.dts
@@ -250,6 +250,7 @@
 		conf-tx {
 			pins = "MIO36";
 			bias-disable;
+			output-enable;
 		};
 
 		mux {
@@ -301,6 +302,7 @@
 		conf-bootstrap {
 			pins = "MIO45", "MIO47", "MIO49";
 			bias-disable;
+			output-enable;
 			low-power-disable;
 		};
 
@@ -308,6 +310,7 @@
 			pins = "MIO38", "MIO39", "MIO40",
 				"MIO41", "MIO42", "MIO43";
 			bias-disable;
+			output-enable;
 			low-power-enable;
 		};
 
@@ -316,6 +319,7 @@
 			slew-rate = <SLEW_RATE_SLOW>;
 			power-source = <IO_STANDARD_LVCMOS18>;
 			bias-disable;
+			output-enable;
 		};
 
 		mux-mdio {
@@ -346,6 +350,7 @@
 			pins = "MIO54", "MIO56", "MIO57", "MIO58", "MIO59",
 			"MIO60", "MIO61", "MIO62", "MIO63";
 			bias-disable;
+			output-enable;
 			drive-strength = <4>;
 			slew-rate = <SLEW_RATE_SLOW>;
 		};
@@ -373,6 +378,7 @@
 			pins = "MIO66", "MIO68", "MIO69", "MIO70", "MIO71",
 			"MIO72", "MIO73", "MIO74", "MIO75";
 			bias-disable;
+			output-enable;
 			drive-strength = <4>;
 			slew-rate = <SLEW_RATE_SLOW>;
 		};
diff --git a/arch/arm/dts/zynqmp-sck-kv-g-revA.dts b/arch/arm/dts/zynqmp-sck-kv-g-revA.dts
index a81b3f6f51..55bef1df75 100644
--- a/arch/arm/dts/zynqmp-sck-kv-g-revA.dts
+++ b/arch/arm/dts/zynqmp-sck-kv-g-revA.dts
@@ -205,6 +205,7 @@
 		conf-tx {
 			pins = "MIO36";
 			bias-disable;
+			output-enable;
 		};
 
 		mux {
@@ -256,6 +257,7 @@
 		conf-bootstrap {
 			pins = "MIO71", "MIO73", "MIO75";
 			bias-disable;
+			output-enable;
 			low-power-disable;
 		};
 
@@ -263,6 +265,7 @@
 			pins = "MIO64", "MIO65", "MIO66",
 				"MIO67", "MIO68", "MIO69";
 			bias-disable;
+			output-enable;
 			low-power-enable;
 		};
 
@@ -271,6 +274,7 @@
 			slew-rate = <SLEW_RATE_SLOW>;
 			power-source = <IO_STANDARD_LVCMOS18>;
 			bias-disable;
+			output-enable;
 		};
 
 		mux-mdio {
@@ -301,6 +305,7 @@
 			pins = "MIO54", "MIO56", "MIO57", "MIO58", "MIO59",
 			"MIO60", "MIO61", "MIO62", "MIO63";
 			bias-disable;
+			output-enable;
 			drive-strength = <4>;
 			slew-rate = <SLEW_RATE_SLOW>;
 		};
diff --git a/arch/arm/dts/zynqmp-sck-kv-g-revB.dts b/arch/arm/dts/zynqmp-sck-kv-g-revB.dts
index f935f25c88..1b1d9e772f 100644
--- a/arch/arm/dts/zynqmp-sck-kv-g-revB.dts
+++ b/arch/arm/dts/zynqmp-sck-kv-g-revB.dts
@@ -193,6 +193,7 @@
 		conf-tx {
 			pins = "MIO36";
 			bias-disable;
+			output-enable;
 		};
 
 		mux {
@@ -244,6 +245,7 @@
 		conf-bootstrap {
 			pins = "MIO71", "MIO73", "MIO75";
 			bias-disable;
+			output-enable;
 			low-power-disable;
 		};
 
@@ -251,6 +253,7 @@
 			pins = "MIO64", "MIO65", "MIO66",
 				"MIO67", "MIO68", "MIO69";
 			bias-disable;
+			output-enable;
 			low-power-enable;
 		};
 
@@ -259,6 +262,7 @@
 			slew-rate = <SLEW_RATE_SLOW>;
 			power-source = <IO_STANDARD_LVCMOS18>;
 			bias-disable;
+			output-enable;
 		};
 
 		mux-mdio {
@@ -289,6 +293,7 @@
 			pins = "MIO54", "MIO56", "MIO57", "MIO58", "MIO59",
 			"MIO60", "MIO61", "MIO62", "MIO63";
 			bias-disable;
+			output-enable;
 			drive-strength = <4>;
 			slew-rate = <SLEW_RATE_SLOW>;
 		};