6f97dc8d46
The Allwinner A31 uses the ARM GIC as its internal interrupts controller. The GIC can work on several interrupt triggers, and the A31 was actually setting it up to use a rising edge as a trigger, while it was actually a level high trigger, leading to some interrupts that would be completely ignored if the edge was missed. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Cc: stable@vger.kernel.org # 3.12+ Signed-off-by: Olof Johansson <olof@lixom.net>
303 lines
6.7 KiB
Plaintext
303 lines
6.7 KiB
Plaintext
/*
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* Copyright 2013 Maxime Ripard
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*
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* Maxime Ripard <maxime.ripard@free-electrons.com>
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*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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/include/ "skeleton.dtsi"
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/ {
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interrupt-parent = <&gic>;
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cpus {
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#address-cells = <1>;
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#size-cells = <0>;
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cpu@0 {
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compatible = "arm,cortex-a7";
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device_type = "cpu";
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reg = <0>;
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};
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cpu@1 {
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compatible = "arm,cortex-a7";
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device_type = "cpu";
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reg = <1>;
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};
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cpu@2 {
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compatible = "arm,cortex-a7";
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device_type = "cpu";
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reg = <2>;
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};
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cpu@3 {
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compatible = "arm,cortex-a7";
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device_type = "cpu";
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reg = <3>;
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};
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};
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memory {
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reg = <0x40000000 0x80000000>;
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};
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clocks {
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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osc24M: osc24M {
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#clock-cells = <0>;
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compatible = "fixed-clock";
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clock-frequency = <24000000>;
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};
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osc32k: osc32k {
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#clock-cells = <0>;
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compatible = "fixed-clock";
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clock-frequency = <32768>;
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};
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pll1: pll1@01c20000 {
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#clock-cells = <0>;
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compatible = "allwinner,sun6i-a31-pll1-clk";
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reg = <0x01c20000 0x4>;
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clocks = <&osc24M>;
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};
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/*
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* This is a dummy clock, to be used as placeholder on
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* other mux clocks when a specific parent clock is not
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* yet implemented. It should be dropped when the driver
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* is complete.
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*/
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pll6: pll6 {
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#clock-cells = <0>;
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compatible = "fixed-clock";
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clock-frequency = <0>;
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};
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cpu: cpu@01c20050 {
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#clock-cells = <0>;
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compatible = "allwinner,sun4i-cpu-clk";
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reg = <0x01c20050 0x4>;
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/*
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* PLL1 is listed twice here.
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* While it looks suspicious, it's actually documented
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* that way both in the datasheet and in the code from
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* Allwinner.
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*/
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clocks = <&osc32k>, <&osc24M>, <&pll1>, <&pll1>;
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};
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axi: axi@01c20050 {
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#clock-cells = <0>;
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compatible = "allwinner,sun4i-axi-clk";
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reg = <0x01c20050 0x4>;
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clocks = <&cpu>;
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};
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ahb1_mux: ahb1_mux@01c20054 {
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#clock-cells = <0>;
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compatible = "allwinner,sun6i-a31-ahb1-mux-clk";
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reg = <0x01c20054 0x4>;
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clocks = <&osc32k>, <&osc24M>, <&axi>, <&pll6>;
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};
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ahb1: ahb1@01c20054 {
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#clock-cells = <0>;
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compatible = "allwinner,sun4i-ahb-clk";
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reg = <0x01c20054 0x4>;
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clocks = <&ahb1_mux>;
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};
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ahb1_gates: ahb1_gates@01c20060 {
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#clock-cells = <1>;
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compatible = "allwinner,sun6i-a31-ahb1-gates-clk";
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reg = <0x01c20060 0x8>;
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clocks = <&ahb1>;
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clock-output-names = "ahb1_mipidsi", "ahb1_ss",
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"ahb1_dma", "ahb1_mmc0", "ahb1_mmc1",
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"ahb1_mmc2", "ahb1_mmc3", "ahb1_nand1",
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"ahb1_nand0", "ahb1_sdram",
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"ahb1_gmac", "ahb1_ts", "ahb1_hstimer",
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"ahb1_spi0", "ahb1_spi1", "ahb1_spi2",
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"ahb1_spi3", "ahb1_otg", "ahb1_ehci0",
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"ahb1_ehci1", "ahb1_ohci0",
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"ahb1_ohci1", "ahb1_ohci2", "ahb1_ve",
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"ahb1_lcd0", "ahb1_lcd1", "ahb1_csi",
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"ahb1_hdmi", "ahb1_de0", "ahb1_de1",
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"ahb1_fe0", "ahb1_fe1", "ahb1_mp",
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"ahb1_gpu", "ahb1_deu0", "ahb1_deu1",
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"ahb1_drc0", "ahb1_drc1";
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};
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apb1: apb1@01c20054 {
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#clock-cells = <0>;
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compatible = "allwinner,sun4i-apb0-clk";
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reg = <0x01c20054 0x4>;
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clocks = <&ahb1>;
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};
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apb1_gates: apb1_gates@01c20060 {
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#clock-cells = <1>;
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compatible = "allwinner,sun6i-a31-apb1-gates-clk";
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reg = <0x01c20068 0x4>;
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clocks = <&apb1>;
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clock-output-names = "apb1_codec", "apb1_digital_mic",
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"apb1_pio", "apb1_daudio0",
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"apb1_daudio1";
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};
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apb2_mux: apb2_mux@01c20058 {
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#clock-cells = <0>;
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compatible = "allwinner,sun4i-apb1-mux-clk";
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reg = <0x01c20058 0x4>;
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clocks = <&osc32k>, <&osc24M>, <&pll6>, <&pll6>;
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};
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apb2: apb2@01c20058 {
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#clock-cells = <0>;
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compatible = "allwinner,sun6i-a31-apb2-div-clk";
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reg = <0x01c20058 0x4>;
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clocks = <&apb2_mux>;
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};
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apb2_gates: apb2_gates@01c2006c {
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#clock-cells = <1>;
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compatible = "allwinner,sun6i-a31-apb2-gates-clk";
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reg = <0x01c2006c 0x4>;
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clocks = <&apb2>;
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clock-output-names = "apb2_i2c0", "apb2_i2c1",
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"apb2_i2c2", "apb2_i2c3", "apb2_uart0",
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"apb2_uart1", "apb2_uart2", "apb2_uart3",
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"apb2_uart4", "apb2_uart5";
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};
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};
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soc@01c00000 {
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compatible = "simple-bus";
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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pio: pinctrl@01c20800 {
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compatible = "allwinner,sun6i-a31-pinctrl";
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reg = <0x01c20800 0x400>;
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interrupts = <0 11 4>,
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<0 15 4>,
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<0 16 4>,
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<0 17 4>;
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clocks = <&apb1_gates 5>;
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gpio-controller;
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interrupt-controller;
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#address-cells = <1>;
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#size-cells = <0>;
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#gpio-cells = <3>;
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uart0_pins_a: uart0@0 {
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allwinner,pins = "PH20", "PH21";
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allwinner,function = "uart0";
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allwinner,drive = <0>;
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allwinner,pull = <0>;
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};
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};
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timer@01c20c00 {
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compatible = "allwinner,sun4i-timer";
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reg = <0x01c20c00 0xa0>;
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interrupts = <0 18 4>,
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<0 19 4>,
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<0 20 4>,
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<0 21 4>,
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<0 22 4>;
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clocks = <&osc24M>;
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};
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wdt1: watchdog@01c20ca0 {
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compatible = "allwinner,sun6i-wdt";
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reg = <0x01c20ca0 0x20>;
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};
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uart0: serial@01c28000 {
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compatible = "snps,dw-apb-uart";
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reg = <0x01c28000 0x400>;
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interrupts = <0 0 4>;
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reg-shift = <2>;
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reg-io-width = <4>;
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clocks = <&apb2_gates 16>;
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status = "disabled";
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};
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uart1: serial@01c28400 {
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compatible = "snps,dw-apb-uart";
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reg = <0x01c28400 0x400>;
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interrupts = <0 1 4>;
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reg-shift = <2>;
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reg-io-width = <4>;
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clocks = <&apb2_gates 17>;
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status = "disabled";
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};
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uart2: serial@01c28800 {
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compatible = "snps,dw-apb-uart";
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reg = <0x01c28800 0x400>;
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interrupts = <0 2 4>;
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reg-shift = <2>;
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reg-io-width = <4>;
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clocks = <&apb2_gates 18>;
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status = "disabled";
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};
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uart3: serial@01c28c00 {
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compatible = "snps,dw-apb-uart";
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reg = <0x01c28c00 0x400>;
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interrupts = <0 3 4>;
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reg-shift = <2>;
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reg-io-width = <4>;
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clocks = <&apb2_gates 19>;
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status = "disabled";
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};
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uart4: serial@01c29000 {
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compatible = "snps,dw-apb-uart";
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reg = <0x01c29000 0x400>;
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interrupts = <0 4 4>;
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reg-shift = <2>;
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reg-io-width = <4>;
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clocks = <&apb2_gates 20>;
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status = "disabled";
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};
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uart5: serial@01c29400 {
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compatible = "snps,dw-apb-uart";
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reg = <0x01c29400 0x400>;
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interrupts = <0 5 4>;
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reg-shift = <2>;
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reg-io-width = <4>;
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clocks = <&apb2_gates 21>;
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status = "disabled";
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};
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gic: interrupt-controller@01c81000 {
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compatible = "arm,cortex-a7-gic", "arm,cortex-a15-gic";
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reg = <0x01c81000 0x1000>,
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<0x01c82000 0x1000>,
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<0x01c84000 0x2000>,
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<0x01c86000 0x2000>;
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interrupt-controller;
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#interrupt-cells = <3>;
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interrupts = <1 9 0xf04>;
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};
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};
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};
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