arm: Add basic clocks for Rockchip rk3066a SoCs

This adds a basic clock setup for rk3066a SoCs. Only the gates are
set up currently, as the mux and dividers should use the upcoming
generic devicetree bindings.

Clocks whose rates need to be known are supplied by fixed-rate
"dummy"-clocks that provide the correct rate. This is uncritical insofar
that the only bootloader currently in existence for Rockchip devices
is the propietary Rockchip one that always setups the clocks in the
necessary way.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Mike Turquette <mturquette@linaro.org>

diff --git a/arch/arm/boot/dts/rk3066a-clocks.dtsi b/arch/arm/boot/dts/rk3066a-clocks.dtsi
new file mode 100644 (file)
index 0000000..6e307fc
--- /dev/null
+++ b/arch/arm/boot/dts/rk3066a-clocks.dtsi
@@ -0,0 +1,299 @@
+/*
+ * Copyright (c) 2013 MundoReader S.L.
+ * Author: Heiko Stuebner <heiko@sntech.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+/ {
+       clocks {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               ranges;
+
+               /*
+                * This is a dummy clock, to be used as placeholder on
+                * other mux clocks when a specific parent clock is not
+                * yet implemented. It should be dropped when the driver
+                * is complete.
+                */
+               dummy: dummy {
+                       compatible = "fixed-clock";
+                       clock-frequency = <0>;
+                       #clock-cells = <0>;
+               };
+
+               xin24m: xin24m {
+                       compatible = "fixed-clock";
+                       clock-frequency = <24000000>;
+                       #clock-cells = <0>;
+               };
+
+               dummy48m: dummy48m {
+                       compatible = "fixed-clock";
+                       clock-frequency = <48000000>;
+                       #clock-cells = <0>;
+               };
+
+               dummy150m: dummy150m {
+                       compatible = "fixed-clock";
+                       clock-frequency = <150000000>;
+                       #clock-cells = <0>;
+               };
+
+               clk_gates0: gate-clk@200000d0 {
+                       compatible = "rockchip,rk2928-gate-clk";
+                       reg = <0x200000d0 0x4>;
+                       clocks = <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>;
+
+                       clock-output-names =
+                               "gate_core_periph", "gate_cpu_gpll",
+                               "gate_ddrphy", "gate_aclk_cpu",
+                               "gate_hclk_cpu", "gate_pclk_cpu",
+                               "gate_atclk_cpu", "gate_i2s0",
+                               "gate_i2s0_frac", "gate_i2s1",
+                               "gate_i2s1_frac", "gate_i2s2",
+                               "gate_i2s2_frac", "gate_spdif",
+                               "gate_spdif_frac", "gate_testclk";
+
+                       #clock-cells = <1>;
+               };
+
+               clk_gates1: gate-clk@200000d4 {
+                       compatible = "rockchip,rk2928-gate-clk";
+                       reg = <0x200000d4 0x4>;
+                       clocks = <&xin24m>, <&xin24m>,
+                                <&xin24m>, <&dummy>,
+                                <&dummy>, <&xin24m>,
+                                <&xin24m>, <&dummy>,
+                                <&xin24m>, <&dummy>,
+                                <&xin24m>, <&dummy>,
+                                <&xin24m>, <&dummy>,
+                                <&xin24m>, <&dummy>;
+
+                       clock-output-names =
+                               "gate_timer0", "gate_timer1",
+                               "gate_timer2", "gate_jtag",
+                               "gate_aclk_lcdc1_src", "gate_otgphy0",
+                               "gate_otgphy1", "gate_ddr_gpll",
+                               "gate_uart0", "gate_frac_uart0",
+                               "gate_uart1", "gate_frac_uart1",
+                               "gate_uart2", "gate_frac_uart2",
+                               "gate_uart3", "gate_frac_uart3";
+
+                       #clock-cells = <1>;
+               };
+
+               clk_gates2: gate-clk@200000d8 {
+                       compatible = "rockchip,rk2928-gate-clk";
+                       reg = <0x200000d8 0x4>;
+                       clocks = <&clk_gates2 1>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&clk_gates2 3>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy48m>,
+                                <&dummy>, <&dummy48m>,
+                                <&dummy>, <&dummy>;
+
+                       clock-output-names =
+                               "gate_periph_src", "gate_aclk_periph",
+                               "gate_hclk_periph", "gate_pclk_periph",
+                               "gate_smc", "gate_mac",
+                               "gate_hsadc", "gate_hsadc_frac",
+                               "gate_saradc", "gate_spi0",
+                               "gate_spi1", "gate_mmc0",
+                               "gate_mac_lbtest", "gate_mmc1",
+                               "gate_emmc", "gate_tsadc";
+
+                       #clock-cells = <1>;
+               };
+
+               clk_gates3: gate-clk@200000dc {
+                       compatible = "rockchip,rk2928-gate-clk";
+                       reg = <0x200000dc 0x4>;
+                       clocks = <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&dummy>;
+
+                       clock-output-names =
+                               "gate_aclk_lcdc0_src", "gate_dclk_lcdc0",
+                               "gate_dclk_lcdc1", "gate_pclkin_cif0",
+                               "gate_pclkin_cif1", "reserved",
+                               "reserved", "gate_cif0_out",
+                               "gate_cif1_out", "gate_aclk_vepu",
+                               "gate_hclk_vepu", "gate_aclk_vdpu",
+                               "gate_hclk_vdpu", "gate_gpu_src",
+                               "reserved", "gate_xin27m";
+
+                       #clock-cells = <1>;
+               };
+
+               clk_gates4: gate-clk@200000e0 {
+                       compatible = "rockchip,rk2928-gate-clk";
+                       reg = <0x200000e0 0x4>;
+                       clocks = <&clk_gates2 2>, <&clk_gates2 3>,
+                                <&clk_gates2 1>, <&clk_gates2 1>,
+                                <&clk_gates2 1>, <&clk_gates2 2>,
+                                <&clk_gates2 2>, <&clk_gates2 2>,
+                                <&clk_gates0 4>, <&clk_gates0 4>,
+                                <&clk_gates0 3>, <&clk_gates0 3>,
+                                <&clk_gates0 3>, <&clk_gates2 3>,
+                                <&clk_gates0 4>;
+
+                       clock-output-names =
+                               "gate_hclk_peri_axi_matrix", "gate_pclk_peri_axi_matrix",
+                               "gate_aclk_cpu_peri", "gate_aclk_peri_axi_matrix",
+                               "gate_aclk_pei_niu", "gate_hclk_usb_peri",
+                               "gate_hclk_peri_ahb_arbi", "gate_hclk_emem_peri",
+                               "gate_hclk_cpubus", "gate_hclk_ahb2apb",
+                               "gate_aclk_strc_sys", "gate_aclk_l2mem_con",
+                               "gate_aclk_intmem", "gate_pclk_tsadc",
+                               "gate_hclk_hdmi";
+
+                       #clock-cells = <1>;
+               };
+
+               clk_gates5: gate-clk@200000e4 {
+                       compatible = "rockchip,rk2928-gate-clk";
+                       reg = <0x200000e4 0x4>;
+                       clocks = <&clk_gates0 3>, <&clk_gates2 1>,
+                                <&clk_gates0 5>, <&clk_gates0 5>,
+                                <&clk_gates0 5>, <&clk_gates0 5>,
+                                <&clk_gates0 4>, <&clk_gates0 5>,
+                                <&clk_gates2 1>, <&clk_gates2 2>,
+                                <&clk_gates2 2>, <&clk_gates2 2>,
+                                <&clk_gates2 2>, <&clk_gates4 5>,
+                                <&clk_gates4 5>, <&dummy>;
+
+                       clock-output-names =
+                               "gate_aclk_dmac1", "gate_aclk_dmac2",
+                               "gate_pclk_efuse", "gate_pclk_tzpc",
+                               "gate_pclk_grf", "gate_pclk_pmu",
+                               "gate_hclk_rom", "gate_pclk_ddrupctl",
+                               "gate_aclk_smc", "gate_hclk_nandc",
+                               "gate_hclk_mmc0", "gate_hclk_mmc1",
+                               "gate_hclk_emmc", "gate_hclk_otg0",
+                               "gate_hclk_otg1", "gate_aclk_gpu";
+
+                       #clock-cells = <1>;
+               };
+
+               clk_gates6: gate-clk@200000e8 {
+                       compatible = "rockchip,rk2928-gate-clk";
+                       reg = <0x200000e8 0x4>;
+                       clocks = <&clk_gates3 0>, <&clk_gates0 4>,
+                                <&clk_gates0 4>, <&clk_gates1 4>,
+                                <&clk_gates0 4>, <&clk_gates3 0>,
+                                <&clk_gates0 4>, <&clk_gates1 4>,
+                                <&clk_gates3 0>, <&clk_gates0 4>,
+                                <&clk_gates0 4>, <&clk_gates1 4>,
+                                <&clk_gates0 4>, <&clk_gates3 0>,
+                                <&dummy>, <&dummy>;
+
+                       clock-output-names =
+                               "gate_aclk_lcdc0", "gate_hclk_lcdc0",
+                               "gate_hclk_lcdc1", "gate_aclk_lcdc1",
+                               "gate_hclk_cif0", "gate_aclk_cif0",
+                               "gate_hclk_cif1", "gate_aclk_cif1",
+                               "gate_aclk_ipp", "gate_hclk_ipp",
+                               "gate_hclk_rga", "gate_aclk_rga",
+                               "gate_hclk_vio_bus", "gate_aclk_vio0",
+                               "gate_aclk_vcodec", "gate_shclk_vio_h2h";
+
+                       #clock-cells = <1>;
+               };
+
+               clk_gates7: gate-clk@200000ec {
+                       compatible = "rockchip,rk2928-gate-clk";
+                       reg = <0x200000ec 0x4>;
+                       clocks = <&clk_gates2 2>, <&clk_gates0 4>,
+                                <&clk_gates0 4>, <&clk_gates0 4>,
+                                <&clk_gates0 4>, <&clk_gates2 2>,
+                                <&clk_gates2 2>, <&clk_gates0 5>,
+                                <&clk_gates0 5>, <&clk_gates0 5>,
+                                <&clk_gates0 5>, <&clk_gates2 3>,
+                                <&clk_gates2 3>, <&clk_gates2 3>,
+                                <&clk_gates2 3>, <&clk_gates2 3>;
+
+                       clock-output-names =
+                               "gate_hclk_emac", "gate_hclk_spdif",
+                               "gate_hclk_i2s0_2ch", "gate_hclk_i2s1_2ch",
+                               "gate_hclk_i2s_8ch", "gate_hclk_hsadc",
+                               "gate_hclk_pidf", "gate_pclk_timer0",
+                               "gate_pclk_timer1", "gate_pclk_timer2",
+                               "gate_pclk_pwm01", "gate_pclk_pwm23",
+                               "gate_pclk_spi0", "gate_pclk_spi1",
+                               "gate_pclk_saradc", "gate_pclk_wdt";
+
+                       #clock-cells = <1>;
+               };
+
+               clk_gates8: gate-clk@200000f0 {
+                       compatible = "rockchip,rk2928-gate-clk";
+                       reg = <0x200000f0 0x4>;
+                       clocks = <&clk_gates0 5>, <&clk_gates0 5>,
+                                <&clk_gates2 3>, <&clk_gates2 3>,
+                                <&clk_gates0 5>, <&clk_gates0 5>,
+                                <&clk_gates2 3>, <&clk_gates2 3>,
+                                <&clk_gates2 3>, <&clk_gates0 5>,
+                                <&clk_gates0 5>, <&clk_gates0 5>,
+                                <&clk_gates2 3>, <&clk_gates2 3>,
+                                <&dummy>, <&clk_gates0 5>;
+
+                       clock-output-names =
+                               "gate_pclk_uart0", "gate_pclk_uart1",
+                               "gate_pclk_uart2", "gate_pclk_uart3",
+                               "gate_pclk_i2c0", "gate_pclk_i2c1",
+                               "gate_pclk_i2c2", "gate_pclk_i2c3",
+                               "gate_pclk_i2c4", "gate_pclk_gpio0",
+                               "gate_pclk_gpio1", "gate_pclk_gpio2",
+                               "gate_pclk_gpio3", "gate_pclk_gpio4",
+                               "reserved", "gate_pclk_gpio6";
+
+                       #clock-cells = <1>;
+               };
+
+               clk_gates9: gate-clk@200000f4 {
+                       compatible = "rockchip,rk2928-gate-clk";
+                       reg = <0x200000f4 0x4>;
+                       clocks = <&dummy>, <&clk_gates0 5>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>, <&clk_gates1 4>,
+                                <&clk_gates0 5>, <&dummy>,
+                                <&dummy>, <&dummy>,
+                                <&dummy>;
+
+                       clock-output-names =
+                               "gate_clk_core_dbg", "gate_pclk_dbg",
+                               "gate_clk_trace", "gate_atclk",
+                               "gate_clk_l2c", "gate_aclk_vio1",
+                               "gate_pclk_publ", "gate_aclk_intmem0",
+                               "gate_aclk_intmem1", "gate_aclk_intmem2",
+                               "gate_aclk_intmem3";
+
+                       #clock-cells = <1>;
+               };
+       };
+
+};