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MIPS: lantiq: reboot gphy on restart

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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>
This commit is contained in:
John Crispin 2014-08-07 18:55:57 +02:00 committed by Ralf Baechle
parent c530781c93
commit 50128fe816
1 changed files with 8 additions and 1 deletions
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9
arch/mips/lantiq/xway/reset.c
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@ -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();
}