diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-5.10/033-v5.15-0005-ARM-dts-NSP-Move-USB3-PHY-to-internal-MDIO-bus.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-5.10/033-v5.15-0005-ARM-dts-NSP-Move-USB3-PHY-to-internal-MDIO-bus.patch | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-5.10/033-v5.15-0005-ARM-dts-NSP-Move-USB3-PHY-to-internal-MDIO-bus.patch b/target/linux/bcm53xx/patches-5.10/033-v5.15-0005-ARM-dts-NSP-Move-USB3-PHY-to-internal-MDIO-bus.patch new file mode 100644 index 0000000000..b760e0fcf2 --- /dev/null +++ b/target/linux/bcm53xx/patches-5.10/033-v5.15-0005-ARM-dts-NSP-Move-USB3-PHY-to-internal-MDIO-bus.patch @@ -0,0 +1,85 @@ +From 1c615401bddb1be21e1d375aaa071680f40f1ae2 Mon Sep 17 00:00:00 2001 +From: Matthew Hagan <mnhagan88@gmail.com> +Date: Sun, 13 Jun 2021 10:46:37 +0100 +Subject: [PATCH] ARM: dts: NSP: Move USB3 PHY to internal MDIO bus + +This patch largely replicates Vivek Unune's patch "ARM: dts: +BCM5301X:Make usb3 phy use mdio phy driver"[1] for the NSP platform, +whereby we need to create an mdio-mux to facilitate switches +configured via external MDIO, in this case on the Meraki MX65. + +However in doing so, we are creating an overlap with usb3_phy's +ccb-mii range. To resolve this, usb3_phy should be moved to a child +node of the internal MDIO bus. The result is heavily based upon Vivek's +patch. This has also been cross-referenced with Yendapally Reddy's +earlier work which utilised the subsequently dropped brcm,nsp-usb3-phy +driver: "[PATCH v2 4/4] arm: dts: nsp: Add USB nodes to device tree" +[2]. Finally, this change provides conformance to the bcm-ns-usb3-phy +documentation, utilising the required usb3-dmp-syscon property. Note +that support for the deprecated ccb-mii bindings has been dropped as of +"phy: phy-bcm-ns-usb3: drop support for deprecated DT binding"[3]. + +[1] https://lore.kernel.org/patchwork/patch/933971/ +[2] https://www.spinics.net/lists/arm-kernel/msg555132.html +[3] https://lore.kernel.org/linux-devicetree/20201113113423.9466-1-zajec5@gmail.com/ + +Signed-off-by: Matthew Hagan <mnhagan88@gmail.com> +Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> +--- + arch/arm/boot/dts/bcm-nsp.dtsi | 38 +++++++++++++++++++++++++++------- + 1 file changed, 31 insertions(+), 7 deletions(-) + +--- a/arch/arm/boot/dts/bcm-nsp.dtsi ++++ b/arch/arm/boot/dts/bcm-nsp.dtsi +@@ -370,6 +370,35 @@ + #address-cells = <1>; + }; + ++ mdio-mux@32000 { ++ compatible = "mdio-mux-mmioreg"; ++ reg = <0x32000 0x4>; ++ mux-mask = <0x200>; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ mdio-parent-bus = <&mdio>; ++ ++ mdio_int: mdio@0 { ++ reg = <0x0>; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ usb3_phy: usb3-phy@10 { ++ compatible = "brcm,ns-bx-usb3-phy"; ++ reg = <0x10>; ++ usb3-dmp-syscon = <&usb3_dmp>; ++ #phy-cells = <0>; ++ status = "disabled"; ++ }; ++ }; ++ ++ mdio_ext: mdio@200 { ++ reg = <0x200>; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ }; ++ }; ++ + rng: rng@33000 { + compatible = "brcm,bcm-nsp-rng"; + reg = <0x33000 0x14>; +@@ -528,13 +557,8 @@ + }; + }; + +- usb3_phy: usb3-phy@104000 { +- compatible = "brcm,ns-bx-usb3-phy"; +- reg = <0x104000 0x1000>, +- <0x032000 0x1000>; +- reg-names = "dmp", "ccb-mii"; +- #phy-cells = <0>; +- status = "disabled"; ++ usb3_dmp: syscon@104000 { ++ reg = <0x104000 0x1000>; + }; + }; + |