linux-kernel - [RFC 6/6] riscv: dts: microchip: add mpfs specific macb reset support

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Message-Id: <20220619164935.1492823-7-mail@conchuod.ie>
Date:   Sun, 19 Jun 2022 17:49:36 +0100
From:   Conor Dooley <mail@...chuod.ie>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Daire McNamara <daire.mcnamara@...rochip.com>,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org
Subject: [RFC 6/6] riscv: dts: microchip: add mpfs specific macb reset support

From: Conor Dooley <conor.dooley@...rochip.com>

The macb on PolarFire SoC has reset support which the generic compatible
does not use. Add the newly introduced MPFS specific compatible as the
primary compatible to avail of this support & wire up the reset to the
clock controllers devicetree entry.

Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
 arch/riscv/boot/dts/microchip/mpfs.dtsi | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/boot/dts/microchip/mpfs.dtsi b/arch/riscv/boot/dts/microchip/mpfs.dtsi
index 8c3259134194..5a33cbf9467a 100644
--- a/arch/riscv/boot/dts/microchip/mpfs.dtsi
+++ b/arch/riscv/boot/dts/microchip/mpfs.dtsi
@@ -197,6 +197,7 @@ clkcfg: clkcfg@...02000 {
 			reg = <0x0 0x20002000 0x0 0x1000>, <0x0 0x3E001000 0x0 0x1000>;
 			clocks = <&refclk>;
 			#clock-cells = <1>;
+			#reset-cells = <1>;
 		};
 
 		mmuart0: serial@...00000 {
@@ -331,7 +332,7 @@ i2c1: i2c@...0b000 {
 		};
 
 		mac0: ethernet@...10000 {
-			compatible = "cdns,macb";
+			compatible = "microchip,mpfs-macb", "cdns,macb";
 			reg = <0x0 0x20110000 0x0 0x2000>;
 			#address-cells = <1>;
 			#size-cells = <0>;
@@ -340,11 +341,12 @@ mac0: ethernet@...10000 {
 			local-mac-address = [00 00 00 00 00 00];
 			clocks = <&clkcfg CLK_MAC0>, <&clkcfg CLK_AHB>;
 			clock-names = "pclk", "hclk";
+			resets = <&clkcfg CLK_MAC0>;
 			status = "disabled";
 		};
 
 		mac1: ethernet@...12000 {
-			compatible = "cdns,macb";
+			compatible = "microchip,mpfs-macb", "cdns,macb";
 			reg = <0x0 0x20112000 0x0 0x2000>;
 			#address-cells = <1>;
 			#size-cells = <0>;
@@ -353,6 +355,7 @@ mac1: ethernet@...12000 {
 			local-mac-address = [00 00 00 00 00 00];
 			clocks = <&clkcfg CLK_MAC1>, <&clkcfg CLK_AHB>;
 			clock-names = "pclk", "hclk";
+			resets = <&clkcfg CLK_MAC1>;
 			status = "disabled";
 		};
 
-- 
2.36.1