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lantiq: add device tree binding for the phy clock source

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Signed-off-by: Mathias Kresin <openwrt@kresin.me>

SVN-Revision: 49283
This commit is contained in:
blogic 2016-05-02 18:50:31 +00:00 committed by Jo-Philipp Wich
parent 60ac485274
commit 44cace4dab
1 changed files with 30 additions and 0 deletions
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30
target/linux/lantiq/patches-4.4/0301-xrx200-add-gphy-clk-src-device-tree-binding.patch Normal file
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@ -0,0 +1,30 @@
--- a/arch/mips/lantiq/xway/sysctrl.c
+++ b/arch/mips/lantiq/xway/sysctrl.c
@@ -423,6 +423,20 @@ static void clkdev_add_clkout(void)
}
}
+static void set_phy_clock_source(struct device_node *np_cgu)
+{
+ u32 phy_clk_src, ifcc;
+
+ if (!np_cgu)
+ return;
+
+ if (of_property_read_u32(np_cgu, "lantiq,phy-clk-src", &phy_clk_src))
+ return;
+
+ ifcc = ltq_cgu_r32(ifccr) & ~(0x1c);
+ ltq_cgu_w32(ifcc | (phy_clk_src << 2), ifccr);
+}
+
/* bring up all register ranges that we need for basic system control */
void __init ltq_soc_init(void)
{
@@ -608,4 +622,6 @@ void __init ltq_soc_init(void)
if (of_machine_is_compatible("lantiq,vr9"))
xbar_fpi_burst_disable();
+
+ set_phy_clock_source(np_cgu);
}