Please see these linux kernel ath79 commits:
commit 1e6a3492e7bb12aa8ee26050ff6829c39ebaa152
Author: Antony Pavlov <antonynpavlov@xxxxxxxxx>
Date: Thu Mar 17 06:34:17 2016 +0300
MIPS: dts: qca: introduce AR9331 devicetree
commit 5ae5c452e3361612cd8182eb8bdfecf0ebf42288
Author: Antony Pavlov <antonynpavlov@xxxxxxxxx>
Date: Thu Mar 17 06:34:18 2016 +0300
MIPS: ath79: update devicetree clock support for AR9331
Signed-off-by: Antony Pavlov <antonynpavlov@xxxxxxxxx>
---
arch/mips/dts/ar9331.dtsi | 20 +++++++++++++++-----
arch/mips/dts/black-swift.dts | 4 ++++
arch/mips/dts/tplink-mr3020.dts | 4 ++++
drivers/clk/clk-ar933x.c | 33 ++++++---------------------------
include/dt-bindings/clock/ar933x-clk.h | 22 ----------------------
5 files changed, 29 insertions(+), 54 deletions(-)
diff --git a/arch/mips/dts/ar9331.dtsi b/arch/mips/dts/ar9331.dtsi
index efc0531..4d43087 100644
--- a/arch/mips/dts/ar9331.dtsi
+++ b/arch/mips/dts/ar9331.dtsi
@@ -1,8 +1,13 @@
-#include <dt-bindings/clock/ar933x-clk.h>
+#include <dt-bindings/clock/ath79-clk.h>
#include "skeleton.dtsi"
/ {
+ ref: ref {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ };
+
soc {
#address-cells = <1>;
#size-cells = <1>;
@@ -13,7 +18,8 @@
serial0: serial@18020000 {
compatible = "qca,ar9330-uart";
reg = <0x18020000 0x14>;
- clocks = <&ar9331_clk AR933X_CLK_UART>;
+ clocks = <&ref>;
+ clock-names = "uart";
status = "disabled";
};
@@ -27,9 +33,13 @@
status = "disabled";
};
- ar9331_clk: clock {
- compatible = "qca,ar933x-clk";
- reg = <0x18050000 0x48>;
+ pll: pll-controller@18050000 {
+ compatible = "qca,ar9330-pll";
+ reg = <0x18050000 0x100>;
+
+ clocks = <&ref>;
+ clock-names = "ref";
+
#clock-cells = <1>;
};
diff --git a/arch/mips/dts/black-swift.dts b/arch/mips/dts/black-swift.dts
index d19c381..aa0aeae 100644
--- a/arch/mips/dts/black-swift.dts
+++ b/arch/mips/dts/black-swift.dts
@@ -37,6 +37,10 @@
};
};
+&ref {
+ clock-frequency = <25000000>;
+};
+
&serial0 {
status = "okay";
};
diff --git a/arch/mips/dts/tplink-mr3020.dts b/arch/mips/dts/tplink-mr3020.dts
index 804d290..a315713 100644
--- a/arch/mips/dts/tplink-mr3020.dts
+++ b/arch/mips/dts/tplink-mr3020.dts
@@ -44,6 +44,10 @@
};
};
+&ref {
+ clock-frequency = <25000000>;
+};
+
&serial0 {
status = "okay";
};
diff --git a/drivers/clk/clk-ar933x.c b/drivers/clk/clk-ar933x.c
index ffbd4df..f5cfd39 100644
--- a/drivers/clk/clk-ar933x.c
+++ b/drivers/clk/clk-ar933x.c
@@ -24,9 +24,9 @@
#include <linux/err.h>
#include <mach/ath79.h>
-#include <dt-bindings/clock/ar933x-clk.h>
+#include <dt-bindings/clock/ath79-clk.h>
-static struct clk *clks[AR933X_CLK_END];
+static struct clk *clks[ATH79_CLK_END];
static struct clk_onecell_data clk_data;
struct clk_ar933x {
@@ -100,39 +100,19 @@ static struct clk *clk_ar933x(const char *name, const char *parent,
return &f->clk;
}
-static void ar933x_ref_clk_init(void __iomem *base)
-{
- u32 t;
- unsigned long ref_rate;
-
- t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
- if (t & AR933X_BOOTSTRAP_REF_CLK_40)
- ref_rate = (40 * 1000 * 1000);
- else
- ref_rate = (25 * 1000 * 1000);
-
- clks[AR933X_CLK_REF] = clk_fixed("ref", ref_rate);
-}
-
static void ar933x_pll_init(void __iomem *base)
{
- clks[AR933X_CLK_UART] = clk_fixed_factor("uart", "ref", 1, 1,
- CLK_SET_RATE_PARENT);
-
- clks[AR933X_CLK_CPU] = clk_ar933x("cpu", "ref", base,
+ clks[ATH79_CLK_CPU] = clk_ar933x("cpu", "ref", base,
AR933X_PLL_CLOCK_CTRL_CPU_DIV_SHIFT,
AR933X_PLL_CLOCK_CTRL_CPU_DIV_MASK);
- clks[AR933X_CLK_DDR] = clk_ar933x("ddr", "ref", base,
+ clks[ATH79_CLK_DDR] = clk_ar933x("ddr", "ref", base,
AR933X_PLL_CLOCK_CTRL_DDR_DIV_SHIFT,
AR933X_PLL_CLOCK_CTRL_DDR_DIV_MASK);
- clks[AR933X_CLK_AHB] = clk_ar933x("ahb", "ref", base,
+ clks[ATH79_CLK_AHB] = clk_ar933x("ahb", "ref", base,
AR933X_PLL_CLOCK_CTRL_AHB_DIV_SHIFT,
AR933X_PLL_CLOCK_CTRL_AHB_DIV_MASK);
-
- clks[AR933X_CLK_WDT] = clk_fixed_factor("wdt", "ahb", 1, 1,
- CLK_SET_RATE_PARENT);
}
static int ar933x_clk_probe(struct device_d *dev)
@@ -145,7 +125,6 @@ static int ar933x_clk_probe(struct device_d *dev)
return PTR_ERR(iores);
base = IOMEM(iores->start);
- ar933x_ref_clk_init(base);
ar933x_pll_init(base);
clk_data.clks = clks;
@@ -158,7 +137,7 @@ static int ar933x_clk_probe(struct device_d *dev)
static __maybe_unused struct of_device_id ar933x_clk_dt_ids[] = {
{
- .compatible = "qca,ar933x-clk",
+ .compatible = "qca,ar9330-pll",
}, {
/* sentinel */
}
diff --git a/include/dt-bindings/clock/ar933x-clk.h b/include/dt-bindings/clock/ar933x-clk.h
deleted file mode 100644
index f048930..0000000
--- a/include/dt-bindings/clock/ar933x-clk.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Copyright (C) 2014 Antony Pavlov <antonynpavlov@xxxxxxxxx>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- */
-
-#ifndef __DT_BINDINGS_AR933X_CLK_H
-#define __DT_BINDINGS_AR933X_CLK_H
-
-#define AR933X_CLK_REF 0
-#define AR933X_CLK_UART 1
-#define AR933X_CLK_CPU 2
-#define AR933X_CLK_DDR 3
-#define AR933X_CLK_AHB 4
-#define AR933X_CLK_WDT 5
-
-#define AR933X_CLK_END 6
-
-#endif /* __DT_BINDINGS_AR933X_CLK_H */
--
2.7.0
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