[PATCH 2/3] clk: sunxi-ng: add support for PRCM CCUs
Icenowy Zheng
icenowy at aosc.xyz
Tue Feb 28 20:15:40 PST 2017
SoCs after A31 has a clock controller module in the PRCM part.
Support the clock controller module on H5 and A64 now.
Signed-off-by: Icenowy Zheng <icenowy at aosc.xyz>
---
drivers/clk/sunxi-ng/Kconfig | 6 +
drivers/clk/sunxi-ng/Makefile | 1 +
drivers/clk/sunxi-ng/ccu-sun6i-r.c | 209 ++++++++++++++++++++++++++++++++
drivers/clk/sunxi-ng/ccu-sun6i-r.h | 27 +++++
include/dt-bindings/clock/sun6i-r-ccu.h | 58 +++++++++
include/dt-bindings/reset/sun6i-r-ccu.h | 54 +++++++++
6 files changed, 355 insertions(+)
create mode 100644 drivers/clk/sunxi-ng/ccu-sun6i-r.c
create mode 100644 drivers/clk/sunxi-ng/ccu-sun6i-r.h
create mode 100644 include/dt-bindings/clock/sun6i-r-ccu.h
create mode 100644 include/dt-bindings/reset/sun6i-r-ccu.h
diff --git a/drivers/clk/sunxi-ng/Kconfig b/drivers/clk/sunxi-ng/Kconfig
index 695bbf9ef428..44984c050052 100644
--- a/drivers/clk/sunxi-ng/Kconfig
+++ b/drivers/clk/sunxi-ng/Kconfig
@@ -141,4 +141,10 @@ config SUN9I_A80_CCU
select SUNXI_CCU_PHASE
default MACH_SUN9I
+config SUN6I_R_CCU
+ bool "Support for Allwinner SoCs' PRCM CCUs"
+ select SUNXI_CCU_DIV
+ select SUNXI_CCU_GATE
+ default MACH_SUN8I || (ARCH_SUNXI && ARM64)
+
endif
diff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile
index 6feaac0c5600..77ebcfd7d2ca 100644
--- a/drivers/clk/sunxi-ng/Makefile
+++ b/drivers/clk/sunxi-ng/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_SUNXI_CCU_MP) += ccu_mp.o
obj-$(CONFIG_SUN50I_A64_CCU) += ccu-sun50i-a64.o
obj-$(CONFIG_SUN5I_CCU) += ccu-sun5i.o
obj-$(CONFIG_SUN6I_A31_CCU) += ccu-sun6i-a31.o
+obj-$(CONFIG_SUN6I_R_CCU) += ccu-sun6i-r.o
obj-$(CONFIG_SUN8I_A23_CCU) += ccu-sun8i-a23.o
obj-$(CONFIG_SUN8I_A33_CCU) += ccu-sun8i-a33.o
obj-$(CONFIG_SUN8I_H3_CCU) += ccu-sun8i-h3.o
diff --git a/drivers/clk/sunxi-ng/ccu-sun6i-r.c b/drivers/clk/sunxi-ng/ccu-sun6i-r.c
new file mode 100644
index 000000000000..988d6b299e91
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu-sun6i-r.c
@@ -0,0 +1,209 @@
+/*
+ * Copyright (c) 2016 Icenowy Zheng <icenowy at aosc.xyz>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+
+#include "ccu_common.h"
+#include "ccu_reset.h"
+
+#include "ccu_div.h"
+#include "ccu_gate.h"
+#include "ccu_mp.h"
+#include "ccu_nm.h"
+
+#include "ccu-sun6i-r.h"
+
+static const char * const cpus_parents[] = { "osc32k", "osc24M",
+ "pll-periph0" };
+
+static struct ccu_div cpus_clk = {
+ .div = _SUNXI_CCU_DIV_FLAGS(4, 2, CLK_DIVIDER_POWER_OF_TWO),
+
+ .mux = {
+ .shift = 16,
+ .width = 2,
+
+ .variable_prediv = {
+ .index = 2,
+ .shift = 8,
+ .width = 5,
+ },
+ },
+
+ .common = {
+ .reg = 0x00,
+ .features = CCU_FEATURE_VARIABLE_PREDIV,
+ .hw.init = CLK_HW_INIT_PARENTS("cpus",
+ cpus_parents,
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static CLK_FIXED_FACTOR(r_ahb0_clk, "r-ahb0", "cpus", 1, 1, 0);
+
+static struct ccu_div r_apb0_clk = {
+ .div = _SUNXI_CCU_DIV_FLAGS(0, 2, CLK_DIVIDER_POWER_OF_TWO),
+
+ .common = {
+ .reg = 0x0c,
+ .hw.init = CLK_HW_INIT("r-apb0",
+ "r-ahb0",
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static SUNXI_CCU_GATE(r_bus_pio_clk, "r-bus-pio", "r-apb0",
+ 0x28, BIT(0), 0);
+static SUNXI_CCU_GATE(r_bus_ir_clk, "r-bus-ir", "r-apb0",
+ 0x28, BIT(1), 0);
+static SUNXI_CCU_GATE(r_bus_timer_clk, "r-bus-timer", "r-apb0",
+ 0x28, BIT(2), 0);
+static SUNXI_CCU_GATE(r_bus_rsb_clk, "r-bus-rsb", "r-apb0",
+ 0x28, BIT(3), 0);
+static SUNXI_CCU_GATE(r_bus_uart_clk, "r-bus-uart", "r-apb0",
+ 0x28, BIT(4), 0);
+static SUNXI_CCU_GATE(r_bus_i2c_clk, "r-bus-i2c", "r-apb0",
+ 0x28, BIT(6), 0);
+
+static const char * const r_mod0_default_parents[] = { "osc32K", "osc24M" };
+static SUNXI_CCU_MP_WITH_MUX_GATE(r_ir_clk, "r-ir",
+ r_mod0_default_parents, 0x54,
+ 0, 4, /* M */
+ 16, 2, /* P */
+ 24, 2, /* mux */
+ BIT(31), /* gate */
+ 0);
+
+static struct ccu_common *sun8i_h3_r_ccu_clks[] = {
+ &cpus_clk.common,
+ &r_apb0_clk.common,
+ &r_bus_pio_clk.common,
+ &r_bus_ir_clk.common,
+ &r_bus_timer_clk.common,
+ &r_bus_uart_clk.common,
+ &r_bus_i2c_clk.common,
+ &r_ir_clk.common,
+};
+
+static struct ccu_common *sun50i_a64_r_ccu_clks[] = {
+ &cpus_clk.common,
+ &r_apb0_clk.common,
+ &r_bus_pio_clk.common,
+ &r_bus_ir_clk.common,
+ &r_bus_timer_clk.common,
+ &r_bus_rsb_clk.common,
+ &r_bus_uart_clk.common,
+ &r_bus_i2c_clk.common,
+ &r_ir_clk.common,
+};
+
+static struct clk_hw_onecell_data sun8i_h3_r_hw_clks = {
+ .hws = {
+ [CLK_CPUS] = &cpus_clk.common.hw,
+ [CLK_R_AHB0] = &r_ahb0_clk.hw,
+ [CLK_R_APB0] = &r_apb0_clk.common.hw,
+ [CLK_R_BUS_PIO] = &r_bus_pio_clk.common.hw,
+ [CLK_R_BUS_IR] = &r_bus_ir_clk.common.hw,
+ [CLK_R_BUS_TIMER] = &r_bus_timer_clk.common.hw,
+ [CLK_R_BUS_UART] = &r_bus_uart_clk.common.hw,
+ [CLK_R_BUS_I2C] = &r_bus_i2c_clk.common.hw,
+ [CLK_R_IR] = &r_ir_clk.common.hw,
+ },
+ .num = CLK_NUMBER,
+};
+
+static struct clk_hw_onecell_data sun50i_a64_r_hw_clks = {
+ .hws = {
+ [CLK_CPUS] = &cpus_clk.common.hw,
+ [CLK_R_AHB0] = &r_ahb0_clk.hw,
+ [CLK_R_APB0] = &r_apb0_clk.common.hw,
+ [CLK_R_BUS_PIO] = &r_bus_pio_clk.common.hw,
+ [CLK_R_BUS_IR] = &r_bus_ir_clk.common.hw,
+ [CLK_R_BUS_TIMER] = &r_bus_timer_clk.common.hw,
+ [CLK_R_BUS_RSB] = &r_bus_rsb_clk.common.hw,
+ [CLK_R_BUS_UART] = &r_bus_uart_clk.common.hw,
+ [CLK_R_BUS_I2C] = &r_bus_i2c_clk.common.hw,
+ [CLK_R_IR] = &r_ir_clk.common.hw,
+ },
+ .num = CLK_NUMBER,
+};
+
+static struct ccu_reset_map sun8i_h3_r_ccu_resets[] = {
+ [RST_R_BUS_PIO] = { 0xb0, BIT(0) },
+ [RST_R_BUS_IR] = { 0xb0, BIT(1) },
+ [RST_R_BUS_TIMER] = { 0xb0, BIT(2) },
+ [RST_R_BUS_UART] = { 0xb0, BIT(4) },
+ [RST_R_BUS_I2C] = { 0xb0, BIT(6) },
+};
+
+static struct ccu_reset_map sun50i_a64_r_ccu_resets[] = {
+ [RST_R_BUS_PIO] = { 0xb0, BIT(0) },
+ [RST_R_BUS_IR] = { 0xb0, BIT(1) },
+ [RST_R_BUS_TIMER] = { 0xb0, BIT(2) },
+ [RST_R_BUS_RSB] = { 0xb0, BIT(3) },
+ [RST_R_BUS_UART] = { 0xb0, BIT(4) },
+ [RST_R_BUS_I2C] = { 0xb0, BIT(6) },
+};
+
+static const struct sunxi_ccu_desc sun8i_h3_r_ccu_desc = {
+ .ccu_clks = sun8i_h3_r_ccu_clks,
+ .num_ccu_clks = ARRAY_SIZE(sun8i_h3_r_ccu_clks),
+
+ .hw_clks = &sun8i_h3_r_hw_clks,
+
+ .resets = sun8i_h3_r_ccu_resets,
+ .num_resets = ARRAY_SIZE(sun8i_h3_r_ccu_resets),
+};
+
+static const struct sunxi_ccu_desc sun50i_a64_r_ccu_desc = {
+ .ccu_clks = sun50i_a64_r_ccu_clks,
+ .num_ccu_clks = ARRAY_SIZE(sun50i_a64_r_ccu_clks),
+
+ .hw_clks = &sun50i_a64_r_hw_clks,
+
+ .resets = sun50i_a64_r_ccu_resets,
+ .num_resets = ARRAY_SIZE(sun50i_a64_r_ccu_resets),
+};
+
+static void __init sunxi_r_ccu_init(struct device_node *node,
+ const struct sunxi_ccu_desc *desc)
+{
+ void __iomem *reg;
+
+ reg = of_io_request_and_map(node, 0, of_node_full_name(node));
+ if (IS_ERR(reg)) {
+ pr_err("%s: Could not map the clock registers\n",
+ of_node_full_name(node));
+ return;
+ }
+
+ sunxi_ccu_probe(node, reg, desc);
+}
+
+static void __init sun8i_h3_r_ccu_setup(struct device_node *node)
+{
+ sunxi_r_ccu_init(node, &sun8i_h3_r_ccu_desc);
+}
+CLK_OF_DECLARE(sun8i_h3_r_ccu, "allwinner,sun8i-h3-r-ccu",
+ sun8i_h3_r_ccu_setup);
+
+static void __init sun50i_a64_r_ccu_setup(struct device_node *node)
+{
+ sunxi_r_ccu_init(node, &sun50i_a64_r_ccu_desc);
+}
+CLK_OF_DECLARE(sun50i_a64_r_ccu, "allwinner,sun50i-a64-r-ccu",
+ sun50i_a64_r_ccu_setup);
diff --git a/drivers/clk/sunxi-ng/ccu-sun6i-r.h b/drivers/clk/sunxi-ng/ccu-sun6i-r.h
new file mode 100644
index 000000000000..a7725b419a66
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu-sun6i-r.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2016 Icenowy <icenowy at aosc.xyz>
+ *
+ * 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.
+ */
+
+#ifndef _CCU_SUN6I_R_H
+#define _CCU_SUN6I_R_H_
+
+#include <dt-bindings/clock/sun6i-r-ccu.h>
+#include <dt-bindings/reset/sun6i-r-ccu.h>
+
+/* AHB/APB bus clocks are not exported */
+#define CLK_R_AHB0 1
+#define CLK_R_APB0 2
+
+#define CLK_NUMBER (CLK_R_IR + 1)
+
+#endif /* _CCU_SUN6I_R_H */
diff --git a/include/dt-bindings/clock/sun6i-r-ccu.h b/include/dt-bindings/clock/sun6i-r-ccu.h
new file mode 100644
index 000000000000..def6ee8e1980
--- /dev/null
+++ b/include/dt-bindings/clock/sun6i-r-ccu.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2016 Icenowy Zheng <icenowy at aosc.xyz>
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ * a) This file 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 file 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.
+ *
+ * Or, alternatively,
+ *
+ * b) Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _DT_BINDINGS_CLK_SUN6I_R_CCU_H_
+#define _DT_BINDINGS_CLK_SUN6I_R_CCU_H_
+
+#define CLK_CPUS 0
+
+#define CLK_R_BUS_PIO 3
+#define CLK_R_BUS_IR 4
+#define CLK_R_BUS_TIMER 5
+#define CLK_R_BUS_RSB 6
+#define CLK_R_BUS_UART 7
+/* 8 is reserved for CLK_R_BUS_W1 on A31 */
+#define CLK_R_BUS_I2C 9
+
+#define CLK_R_IR 10
+
+#endif /* _DT_BINDINGS_CLK_SUN6I_R_CCU_H_ */
diff --git a/include/dt-bindings/reset/sun6i-r-ccu.h b/include/dt-bindings/reset/sun6i-r-ccu.h
new file mode 100644
index 000000000000..5c708b85ce30
--- /dev/null
+++ b/include/dt-bindings/reset/sun6i-r-ccu.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2016 Icenowy Zheng <icenowy at aosc.xyz>
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ * a) This file 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 file 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.
+ *
+ * Or, alternatively,
+ *
+ * b) Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _DT_BINDINGS_RST_SUN6I_R_CCU_H_
+#define _DT_BINDINGS_RST_SUN6I_R_CCU_H_
+
+#define RST_R_BUS_PIO 0
+#define RST_R_BUS_IR 1
+#define RST_R_BUS_TIMER 2
+#define RST_R_BUS_RSB 3
+#define RST_R_BUS_UART 4
+/* 5 is reserved for RST_R_BUS_W1 on A31 */
+#define RST_R_BUS_I2C 6
+
+#endif /* _DT_BINDINGS_RST_SUN6I_R_CCU_H_ */
--
2.11.1
More information about the linux-arm-kernel
mailing list