From: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Date: Fri, 18 Oct 2019 14:11:25 +0300
Subject: ARC: [plat-hsdk]: Enable on-board SPI NOR flash IC
Git-commit: 8ca8fa7f22dcb0a3265490a690b0c3e27de681f9
Patch-mainline: 5.4-rc6
References: bnc#1151927 5.3.11

HSDK board has sst26wf016b SPI NOR flash IC installed, enable it.

Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/arc/boot/dts/hsdk.dts      |    8 ++++++++
 arch/arc/configs/hsdk_defconfig |    2 ++
 2 files changed, 10 insertions(+)

--- a/arch/arc/boot/dts/hsdk.dts
+++ b/arch/arc/boot/dts/hsdk.dts
@@ -264,6 +264,14 @@
 			clocks = <&input_clk>;
 			cs-gpios = <&creg_gpio 0 GPIO_ACTIVE_LOW>,
 				   <&creg_gpio 1 GPIO_ACTIVE_LOW>;
+
+			spi-flash@0 {
+				compatible = "sst26wf016b", "jedec,spi-nor";
+				reg = <0>;
+				#address-cells = <1>;
+				#size-cells = <1>;
+				spi-max-frequency = <4000000>;
+			};
 		};
 
 		creg_gpio: gpio@14b0 {
--- a/arch/arc/configs/hsdk_defconfig
+++ b/arch/arc/configs/hsdk_defconfig
@@ -31,6 +31,8 @@ CONFIG_INET=y
 CONFIG_DEVTMPFS=y
 # CONFIG_STANDALONE is not set
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
+CONFIG_MTD=y
+CONFIG_MTD_SPI_NOR=y
 CONFIG_SCSI=y
 CONFIG_BLK_DEV_SD=y
 CONFIG_NETDEVICES=y