diff options
| author | Chen-Yu Tsai <wens@csie.org> | 2015-03-24 20:22:09 +0300 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2015-04-27 10:03:53 +0300 |
| commit | 2186df37831a8bb259bbf2ae07356747a03d0b8d (patch) | |
| tree | 485561918072205ed40fba360756878d6fbcc99e /arch/arm/boot | |
| parent | ae3bdfe0efe0417b702e6501015375c44226ec23 (diff) | |
| download | linux-2186df37831a8bb259bbf2ae07356747a03d0b8d.tar.xz | |
ARM: dts: sunxi: Update ahb clocks for sun5i and sun7i
The clock driver now supports a muxable ahb clock. Update the dtsi
with the proper compatible and add the new parent clocks.
This also adds the new pll6/4 output for pll6 on sun7i-a20. The
output is not used on sun4/5i.
Also use assigned-clocks to reparent ahb to pll6. We want ahb to
have a stable, non-changing clock rate. cpu/axi clock rate changes
as a result of newly added cpufreq support.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Diffstat (limited to 'arch/arm/boot')
| -rw-r--r-- | arch/arm/boot/dts/sun5i.dtsi | 10 | ||||
| -rw-r--r-- | arch/arm/boot/dts/sun7i-a20.dtsi | 13 |
2 files changed, 18 insertions, 5 deletions
diff --git a/arch/arm/boot/dts/sun5i.dtsi b/arch/arm/boot/dts/sun5i.dtsi index 96b20d646b3f..8c04f240f2e9 100644 --- a/arch/arm/boot/dts/sun5i.dtsi +++ b/arch/arm/boot/dts/sun5i.dtsi @@ -150,10 +150,16 @@ ahb: ahb@01c20054 { #clock-cells = <0>; - compatible = "allwinner,sun4i-a10-ahb-clk"; + compatible = "allwinner,sun5i-a13-ahb-clk"; reg = <0x01c20054 0x4>; - clocks = <&axi>; + clocks = <&axi>, <&cpu>, <&pll6 1>; clock-output-names = "ahb"; + /* + * Use PLL6 as parent, instead of CPU/AXI + * which has rate changes due to cpufreq + */ + assigned-clocks = <&ahb>; + assigned-clock-parents = <&pll6 1>; }; apb0: apb0@01c20054 { diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi index d4ba77202d7a..4163ade867cb 100644 --- a/arch/arm/boot/dts/sun7i-a20.dtsi +++ b/arch/arm/boot/dts/sun7i-a20.dtsi @@ -224,7 +224,8 @@ compatible = "allwinner,sun4i-a10-pll6-clk"; reg = <0x01c20028 0x4>; clocks = <&osc24M>; - clock-output-names = "pll6_sata", "pll6_other", "pll6"; + clock-output-names = "pll6_sata", "pll6_other", "pll6", + "pll6_div_4"; }; pll8: clk@01c20040 { @@ -253,10 +254,16 @@ ahb: ahb@01c20054 { #clock-cells = <0>; - compatible = "allwinner,sun4i-a10-ahb-clk"; + compatible = "allwinner,sun5i-a13-ahb-clk"; reg = <0x01c20054 0x4>; - clocks = <&axi>; + clocks = <&axi>, <&pll6 3>, <&pll6 1>; clock-output-names = "ahb"; + /* + * Use PLL6 as parent, instead of CPU/AXI + * which has rate changes due to cpufreq + */ + assigned-clocks = <&ahb>; + assigned-clock-parents = <&pll6 3>; }; ahb_gates: clk@01c20060 { |