From: John Crispin <blogic@openwrt.org>
Date: Thu, 7 Aug 2014 16:55:57 +0000 (+0200)
Subject: MIPS: lantiq: reboot gphy on restart
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=50128fe8164ba2c9e36bc5156eabdfd69225b7d2;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

MIPS: lantiq: reboot gphy on restart

A reboot sometimes lead to a none working phy. An explicit reboot fixes the
problem.

Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/8044/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/arch/mips/lantiq/xway/reset.c b/arch/mips/lantiq/xway/reset.c
index a1e06b78e15a..fe68f9ae47c1 100644
--- a/arch/mips/lantiq/xway/reset.c
+++ b/arch/mips/lantiq/xway/reset.c
@@ -176,8 +176,15 @@ void ltq_rst_init(void)
 
 static void ltq_machine_restart(char *command)
 {
+	u32 val = ltq_rcu_r32(RCU_RST_REQ);
+
+	if (of_device_is_compatible(ltq_rcu_np, "lantiq,rcu-xrx200"))
+		val |= RCU_RD_GPHY1_XRX200 | RCU_RD_GPHY0_XRX200;
+
+	val |= RCU_RD_SRST;
+
 	local_irq_disable();
-	ltq_rcu_w32(ltq_rcu_r32(RCU_RST_REQ) | RCU_RD_SRST, RCU_RST_REQ);
+	ltq_rcu_w32(val, RCU_RST_REQ);
 	unreachable();
 }