From: Horatiu Vultur <horatiu.vultur@microchip.com>
Date: Wed, 10 Mar 2021 08:31:38 +0000 (+0100)
Subject: net: jr2: Reset switch
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=6b59304602f2f954f22b96ec33e021591d1dc16f;p=u-boot.git

net: jr2: Reset switch

Make sure to reset the switch core at probe time.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
---

diff --git a/arch/mips/dts/mscc,jr2.dtsi b/arch/mips/dts/mscc,jr2.dtsi
index c44e9a2b3a..87db7cae9c 100644
--- a/arch/mips/dts/mscc,jr2.dtsi
+++ b/arch/mips/dts/mscc,jr2.dtsi
@@ -243,7 +243,9 @@
 			      <0x017d0000 0x10000>,  // QFWD
 			      <0x01020000 0x20000>,  // QS
 			      <0x017e0000 0x10000>,  // QSYS
-			      <0x01b00000 0x80000>;  // REW
+			      <0x01b00000 0x80000>,  // REW
+			      <0x01010000 0x100>,    // GCB
+			      <0x00000000 0x100>;    // ICPU
 			reg-names = "port0", "port1", "port2", "port3", "port4",
 				    "port5", "port6", "port7", "port8", "port9",
 				    "port10", "port11", "port12", "port13",
@@ -257,7 +259,7 @@
 				    "port42", "port43", "port44", "port45",
 				    "port46", "port47", "ana_ac", "ana_cl",
 				    "ana_l2", "asm", "hsio", "lrn", "qfwd",
-				    "qs", "qsys", "rew";
+				    "qs", "qsys", "rew", "gcb", "icpu";
 			status = "okay";
 
 			ethernet-ports {
diff --git a/drivers/net/mscc_eswitch/jr2_switch.c b/drivers/net/mscc_eswitch/jr2_switch.c
index 128d7f21ce..9ba6ccc1bb 100644
--- a/drivers/net/mscc_eswitch/jr2_switch.c
+++ b/drivers/net/mscc_eswitch/jr2_switch.c
@@ -235,7 +235,7 @@ static const char * const regs_names[] = {
 	"port36", "port37", "port38", "port39", "port40", "port41", "port42",
 	"port43", "port44", "port45", "port46", "port47",
 	"ana_ac", "ana_cl", "ana_l2", "asm", "hsio", "lrn",
-	"qfwd", "qs", "qsys", "rew",
+	"qfwd", "qs", "qsys", "rew", "gcb", "icpu",
 };
 
 #define REGS_NAMES_COUNT ARRAY_SIZE(regs_names) + 1
@@ -252,6 +252,8 @@ enum jr2_ctrl_regs {
 	QS,
 	QSYS,
 	REW,
+	GCB,
+	ICPU,
 };
 
 #define JR2_MIIM_BUS_COUNT 3
@@ -850,6 +852,7 @@ static int jr2_probe(struct udevice *dev)
 	struct mii_dev *bus;
 	struct ofnode_phandle_args phandle;
 	struct phy_device *phy;
+	u32 val;
 
 	if (!priv)
 		return -EINVAL;
@@ -865,6 +868,17 @@ static int jr2_probe(struct udevice *dev)
 		}
 	}
 
+	val = readl(priv->regs[ICPU] + ICPU_RESET);
+	val |= ICPU_RESET_CORE_RST_PROTECT;
+	writel(val, priv->regs[ICPU] + ICPU_RESET);
+
+	val = readl(priv->regs[GCB] + PERF_SOFT_RST);
+	val |= PERF_SOFT_RST_SOFT_SWC_RST;
+	writel(val, priv->regs[GCB] + PERF_SOFT_RST);
+
+	while (readl(priv->regs[GCB] + PERF_SOFT_RST) & PERF_SOFT_RST_SOFT_SWC_RST)
+		;
+
 	/* Initialize miim buses */
 	memset(&miim, 0x0, sizeof(struct mscc_miim_dev) * JR2_MIIM_BUS_COUNT);