sfp: added sfp configuration bits and misc dts fixes

- Enabled CONFIG_SFP in the kernel build
- Pulled SFP device tree patch from mainline - this enables
dpmac7,8,9,10 that are the 4 SFP+ connectors on HoneyComb / ClearFog-CX
- Pulled AR8035 phy device tree patch
- Remove RTC interrupt from device tree
- Added power button support to device tree
Signed-off-by: Rabeeh Khoury <rabeeh@solid-run.com>

configs/linux/lx2k_additions.config

@@ -42,3 +42,4 @@ CONFIG_CRYPTO_USER_API_HASH=y
 CONFIG_CRYPTO_USER_API_SKCIPHER=y
 CONFIG_CRYPTO_USER_API_RNG=y
 CONFIG_CRYPTO_USER_API_AEAD=y
+CONFIG_SFP=y

patches/linux-LSDK-21.08/0002-arm64-dts-lx2160a-clearfog-itx-add-power-button-supp.patch

+From 8900d0d59b63766c4ed10462eb921c4bd595e4c7 Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@armlinux.org.uk>
+Date: Fri, 8 Jan 2021 23:09:58 +0000
+Subject: [PATCH] arm64: dts: lx2160a-clearfog-itx: add power button support
+
+Add support for the power button.
+
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+Signed-off-by: Shawn Guo <shawnguo@kernel.org>
+---
+ .../boot/dts/freescale/fsl-lx2160a-clearfog-itx.dtsi | 12 ++++++++++++
+ 1 file changed, 12 insertions(+)
+
+diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a-clearfog-itx.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2160a-clearfog-itx.dtsi
+index f3741a32e868..2b63235ca627 100644
+--- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-clearfog-itx.dtsi
++++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-clearfog-itx.dtsi
+@@ -8,6 +8,7 @@
+ /dts-v1/;
+ 
+ #include "fsl-lx2160a-cex7.dtsi"
++#include <dt-bindings/input/linux-event-codes.h>
+ 
+ / {
+ 	aliases {
+@@ -18,6 +19,17 @@ aliases {
+ 	chosen {
+ 		stdout-path = "serial0:115200n8";
+ 	};
++
++	gpio-keys {
++		compatible = "gpio-keys";
++
++		key {
++			label = "power";
++			linux,can-disable;
++			linux,code = <KEY_POWER>;
++			gpios = <&gpio2 6 GPIO_ACTIVE_LOW>;
++		};
++	};
+ };
+ 
+ &emdio2 {
+-- 
+2.25.1
+

patches/linux-LSDK-21.08/0003-arm64-dts-lx2160a-cex7-delete-RTC-interrupt.patch

+From 12dffe14e372ab7af26c12ca4cc91876a0fb7b41 Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@armlinux.org.uk>
+Date: Sun, 10 Jan 2021 13:58:15 +0000
+Subject: [PATCH] arm64: dts: lx2160a-cex7: delete RTC interrupt
+
+The RTC interrupt is incorrect and prevents the RTC driver
+initialising. In any case, the PCF2127 driver wants an active low
+interrupt, which neither the GIC nor the GPIO blocks support.
+There is an ISPPT block in the LX2160A, but this is not supported
+in mainline kernels. So, just delete the interrupt.
+
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+Signed-off-by: Shawn Guo <shawnguo@kernel.org>
+---
+ arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi | 2 --
+ 1 file changed, 2 deletions(-)
+
+diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi
+index d87d16460875..49fcf025494f 100644
+--- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi
++++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi
+@@ -134,8 +134,6 @@ &i2c4 {
+ 	rtc@51 {
+ 		compatible = "nxp,pcf2129";
+ 		reg = <0x51>;
+-		// IRQ10_B
+-		interrupts = <GIC_SPI 150 IRQ_TYPE_LEVEL_HIGH>;
+ 	};
+ };
+ 
+-- 
+2.25.1
+

patches/linux-LSDK-21.08/0004-arm64-dts-lx2160a-cex7-increase-at8035-PHY-gigabit-T.patch

+From 22171213e503edce38f249cff82b9ad3775b9026 Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@armlinux.org.uk>
+Date: Fri, 15 Jan 2021 23:36:39 +0000
+Subject: [PATCH] arm64: dts: lx2160a-cex7: increase at8035 PHY gigabit Tw
+ parameter
+
+Increase the SmartEEE Tw parameter for Atheros PHYs to stop gigabit
+links from sporadically dropping. Testing on this platform shows that
+a value of 24 results in a stable link, whereas 23 or below has the
+occasional drop.
+
+Tested with a Netgear GS116 unmanaged switch link partner with Cat 5e
+cabling.
+
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+Signed-off-by: Shawn Guo <shawnguo@kernel.org>
+---
+ arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi
+index 49fcf025494f..459dccad8326 100644
+--- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi
++++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi
+@@ -40,6 +40,7 @@ &emdio1 {
+ 
+ 	rgmii_phy1: ethernet-phy@1 {
+ 		reg = <1>;
++		qca,smarteee-tw-us-1g = <24>;
+ 	};
+ };
+ 
+-- 
+2.25.1
+

patches/linux-LSDK-21.08/0005-arm64-dts-lx2160a-clearfog-itx-add-SFP-support.patch

+From 312a46148513d8567d013c3474e64543aeea5950 Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@armlinux.org.uk>
+Date: Tue, 9 Mar 2021 16:36:58 +0000
+Subject: [PATCH] arm64: dts: lx2160a-clearfog-itx: add SFP support
+
+Add 2x2 SFP+ cage support for clearfog-itx boards.
+
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+Signed-off-by: Shawn Guo <shawnguo@kernel.org>
+---
+ .../boot/dts/freescale/fsl-lx2160a-cex7.dtsi  | 24 +++++++
+ .../freescale/fsl-lx2160a-clearfog-itx.dtsi   | 64 +++++++++++++++++++
+ 2 files changed, 88 insertions(+)
+
+diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi
+index 459dccad8326..afb455210bd0 100644
+--- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi
++++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi
+@@ -122,6 +122,30 @@ temperature-sensor@48 {
+ 				vcc-supply = <&sb_3v3>;
+ 			};
+ 		};
++
++		sfp0_i2c: i2c@4 {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			reg = <4>;
++		};
++
++		sfp1_i2c: i2c@5 {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			reg = <5>;
++		};
++
++		sfp2_i2c: i2c@6 {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			reg = <6>;
++		};
++
++		sfp3_i2c: i2c@7 {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			reg = <7>;
++		};
+ 	};
+ };
+ 
+diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a-clearfog-itx.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2160a-clearfog-itx.dtsi
+index 2b63235ca627..17f8e733972a 100644
+--- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-clearfog-itx.dtsi
++++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-clearfog-itx.dtsi
+@@ -30,6 +30,54 @@ key {
+ 			gpios = <&gpio2 6 GPIO_ACTIVE_LOW>;
+ 		};
+ 	};
++
++	sfp0: sfp-0 {
++		compatible = "sff,sfp";
++		i2c-bus = <&sfp0_i2c>;
++		mod-def0-gpio = <&gpio2 0 GPIO_ACTIVE_LOW>;
++		maximum-power-milliwatt = <2000>;
++	};
++
++	sfp1: sfp-1 {
++		compatible = "sff,sfp";
++		i2c-bus = <&sfp1_i2c>;
++		mod-def0-gpio = <&gpio2 9 GPIO_ACTIVE_LOW>;
++		maximum-power-milliwatt = <2000>;
++	};
++
++	sfp2: sfp-2 {
++		compatible = "sff,sfp";
++		i2c-bus = <&sfp2_i2c>;
++		mod-def0-gpio = <&gpio2 10 GPIO_ACTIVE_LOW>;
++		maximum-power-milliwatt = <2000>;
++	};
++
++	sfp3: sfp-3 {
++		compatible = "sff,sfp";
++		i2c-bus = <&sfp3_i2c>;
++		mod-def0-gpio = <&gpio2 11 GPIO_ACTIVE_LOW>;
++		maximum-power-milliwatt = <2000>;
++	};
++};
++
++&dpmac7 {
++	sfp = <&sfp0>;
++	managed = "in-band-status";
++};
++
++&dpmac8 {
++	sfp = <&sfp1>;
++	managed = "in-band-status";
++};
++
++&dpmac9 {
++	sfp = <&sfp2>;
++	managed = "in-band-status";
++};
++
++&dpmac10 {
++	sfp = <&sfp3>;
++	managed = "in-band-status";
+ };
+ 
+ &emdio2 {
+@@ -44,6 +92,22 @@ &esdhc0 {
+ 	status = "okay";
+ };
+ 
++&pcs_mdio7 {
++	status = "okay";
++};
++
++&pcs_mdio8 {
++	status = "okay";
++};
++
++&pcs_mdio9 {
++	status = "okay";
++};
++
++&pcs_mdio10 {
++	status = "okay";
++};
++
+ &sata0 {
+ 	status = "okay";
+ };
+-- 
+2.25.1
+