From mboxrd@z Thu Jan 1 00:00:00 1970 From: wens@csie.org (Chen-Yu Tsai) Date: Wed, 25 Mar 2015 01:22:09 +0800 Subject: [PATCH v2 3/3] ARM: dts: sunxi: Update ahb clocks for sun5i and sun7i In-Reply-To: <1427217729-10017-1-git-send-email-wens@csie.org> References: <1427217729-10017-1-git-send-email-wens@csie.org> Message-ID: <1427217729-10017-4-git-send-email-wens@csie.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- arch/arm/boot/dts/sun5i.dtsi | 10 ++++++++-- 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 e42cbb03620f..df79b4c75b34 100644 --- a/arch/arm/boot/dts/sun5i.dtsi +++ b/arch/arm/boot/dts/sun5i.dtsi @@ -150,10 +150,16 @@ ahb: ahb at 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 at 01c20054 { diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi index 3a8530b79f1c..52538beb969a 100644 --- a/arch/arm/boot/dts/sun7i-a20.dtsi +++ b/arch/arm/boot/dts/sun7i-a20.dtsi @@ -225,7 +225,8 @@ 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 at 01c20040 { @@ -254,10 +255,16 @@ ahb: ahb at 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 at 01c20060 { -- 2.1.4