ARM: sun8i: a23/a33: Enable the real LOSC and use it

So far, the LOSC was generated through the RTC internal oscillator, which
was a pretty poor and inaccurate choice.

Now that the RTC properly exposes its internal mux between its oscillator
and the external oscillator, we can use it were relevant.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

diff --git a/arch/arm/boot/dts/sun8i-a23-a33.dtsi b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
index 597f2fc..da7f247 100644 (file)
--- a/arch/arm/boot/dts/sun8i-a23-a33.dtsi
+++ b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
@@ -109,11 +109,11 @@
                        clock-output-names = "osc24M";
                };
 
-               osc32k: osc32k_clk {
+               ext_osc32k: ext_osc32k_clk {
                        #clock-cells = <0>;
                        compatible = "fixed-clock";
                        clock-frequency = <32768>;
-                       clock-output-names = "osc32k";
+                       clock-output-names = "ext-osc32k";
                };
        };
 
@@ -256,7 +256,7 @@
 
                ccu: clock@01c20000 {
                        reg = <0x01c20000 0x400>;
-                       clocks = <&osc24M>, <&osc32k>;
+                       clocks = <&osc24M>, <&rtc 0>;
                        clock-names = "hosc", "losc";
                        #clock-cells = <1>;
                        #reset-cells = <1>;
@@ -266,7 +266,7 @@
                        /* compatible gets set in SoC specific dtsi file */
                        reg = <0x01c20800 0x400>;
                        /* interrupts get set in SoC specific dtsi file */
-                       clocks = <&ccu CLK_BUS_PIO>, <&osc24M>, <&osc32k>;
+                       clocks = <&ccu CLK_BUS_PIO>, <&osc24M>, <&rtc 0>;
                        clock-names = "apb", "hosc", "losc";
                        gpio-controller;
                        interrupt-controller;
@@ -486,6 +486,9 @@
                        reg = <0x01f00000 0x54>;
                        interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>,
                                     <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
+                       clock-output-names = "osc32k";
+                       clocks = <&ext_osc32k>;
+                       #clock-cells = <1>;
                };
 
                nmi_intc: interrupt-controller@01f00c0c {
@@ -564,7 +567,7 @@
                        compatible = "allwinner,sun8i-a23-r-pinctrl";
                        reg = <0x01f02c00 0x400>;
                        interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
-                       clocks = <&apb0_gates 0>, <&osc24M>, <&osc32k>;
+                       clocks = <&apb0_gates 0>, <&osc24M>, <&rtc 0>;
                        clock-names = "apb", "hosc", "losc";
                        resets = <&apb0_rst 0>;
                        gpio-controller;