clk: sunxi-ng: Add A80 Display Engine CCU

With the A80 SoC, Allwinner grouped and moved some subsystem specific
clock controls to a separate address space, and possibly separate
hardware block.

One such subsystem is the display engine. The main clock control unit
now only has 1 set of bus gate, dram gate, module clock, and reset
control for the entire display subsystem. These feed into a secondary
clock control unit, which has controls for each individual module
of the display pipeline. This block is not documented in the user
manual. Allwinner's kernel was used as the reference.

Add support for the display engine clock controls found on the A80.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

6 files changed, 483 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/clock/sun9i-de.txt b/Documentation/devicetree/bindings/clock/sun9i-de.txt
new file mode 100644
index 000000000000..fb18f327b97a
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/sun9i-de.txt
@@ -0,0 +1,28 @@
+Allwinner A80 Display Engine Clock Control Binding
+--------------------------------------------------
+
+Required properties :
+- compatible: must contain one of the following compatibles:
+                - "allwinner,sun9i-a80-de-clks"
+
+- reg: Must contain the registers base address and length
+- clocks: phandle to the clocks feeding the display engine subsystem.
+          Three are needed:
+  - "mod": the display engine module clock
+  - "dram": the DRAM bus clock for the system
+  - "bus": the bus clock for the whole display engine subsystem
+- clock-names: Must contain the clock names described just above
+- resets: phandle to the reset control for the display engine subsystem.
+- #clock-cells : must contain 1
+- #reset-cells : must contain 1
+
+Example:
+de_clocks: clock@3000000 {
+        compatible = "allwinner,sun9i-a80-de-clks";
+        reg = <0x03000000 0x30>;
+        clocks = <&ccu CLK_DE>, <&ccu CLK_SDRAM>, <&ccu CLK_BUS_DE>;
+        clock-names = "mod", "dram", "bus";
+        resets = <&ccu RST_BUS_DE>;
+        #clock-cells = <1>;
+        #reset-cells = <1>;
+};
diff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile
index 8f37ef7fb67d..6feaac0c5600 100644
--- a/drivers/clk/sunxi-ng/Makefile
+++ b/drivers/clk/sunxi-ng/Makefile
@@ -26,4 +26,5 @@ obj-$(CONFIG_SUN8I_A33_CCU)	+= ccu-sun8i-a33.o
 obj-$(CONFIG_SUN8I_H3_CCU)      += ccu-sun8i-h3.o
 obj-$(CONFIG_SUN8I_V3S_CCU)     += ccu-sun8i-v3s.o
 obj-$(CONFIG_SUN9I_A80_CCU)     += ccu-sun9i-a80.o
+obj-$(CONFIG_SUN9I_A80_CCU)     += ccu-sun9i-a80-de.o
 obj-$(CONFIG_SUN9I_A80_CCU)     += ccu-sun9i-a80-usb.o
diff --git a/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.c b/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.c
new file mode 100644
index 000000000000..3fc27db0a49a
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.c
@@ -0,0 +1,283 @@
+/*
+ * Copyright (c) 2016 Chen-Yu Tsai. All rights reserved.
+ *
+ * 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.h>
+#include <linux/clk-provider.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#include "ccu_common.h"
+#include "ccu_div.h"
+#include "ccu_gate.h"
+#include "ccu_reset.h"
+
+#include "ccu-sun9i-a80-de.h"
+
+static SUNXI_CCU_GATE(fe0_clk,          "fe0",          "fe0-div",
+                      0x00, BIT(0), 0);
+static SUNXI_CCU_GATE(fe1_clk,          "fe1",          "fe1-div",
+                      0x00, BIT(1), 0);
+static SUNXI_CCU_GATE(fe2_clk,          "fe2",          "fe2-div",
+                      0x00, BIT(2), 0);
+static SUNXI_CCU_GATE(iep_deu0_clk,     "iep-deu0",     "de",
+                      0x00, BIT(4), 0);
+static SUNXI_CCU_GATE(iep_deu1_clk,     "iep-deu1",     "de",
+                      0x00, BIT(5), 0);
+static SUNXI_CCU_GATE(be0_clk,          "be0",          "be0-div",
+                      0x00, BIT(8), 0);
+static SUNXI_CCU_GATE(be1_clk,          "be1",          "be1-div",
+                      0x00, BIT(9), 0);
+static SUNXI_CCU_GATE(be2_clk,          "be2",          "be2-div",
+                      0x00, BIT(10), 0);
+static SUNXI_CCU_GATE(iep_drc0_clk,     "iep-drc0",     "de",
+                      0x00, BIT(12), 0);
+static SUNXI_CCU_GATE(iep_drc1_clk,     "iep-drc1",     "de",
+                      0x00, BIT(13), 0);
+static SUNXI_CCU_GATE(merge_clk,        "merge",        "de",
+                      0x00, BIT(20), 0);
+
+static SUNXI_CCU_GATE(dram_fe0_clk,     "dram-fe0",     "sdram",
+                      0x04, BIT(0), 0);
+static SUNXI_CCU_GATE(dram_fe1_clk,     "dram-fe1",     "sdram",
+                      0x04, BIT(1), 0);
+static SUNXI_CCU_GATE(dram_fe2_clk,     "dram-fe2",     "sdram",
+                      0x04, BIT(2), 0);
+static SUNXI_CCU_GATE(dram_deu0_clk,    "dram-deu0",    "sdram",
+                      0x04, BIT(4), 0);
+static SUNXI_CCU_GATE(dram_deu1_clk,    "dram-deu1",    "sdram",
+                      0x04, BIT(5), 0);
+static SUNXI_CCU_GATE(dram_be0_clk,     "dram-be0",     "sdram",
+                      0x04, BIT(8), 0);
+static SUNXI_CCU_GATE(dram_be1_clk,     "dram-be1",     "sdram",
+                      0x04, BIT(9), 0);
+static SUNXI_CCU_GATE(dram_be2_clk,     "dram-be2",     "sdram",
+                      0x04, BIT(10), 0);
+static SUNXI_CCU_GATE(dram_drc0_clk,    "dram-drc0",    "sdram",
+                      0x04, BIT(12), 0);
+static SUNXI_CCU_GATE(dram_drc1_clk,    "dram-drc1",    "sdram",
+                      0x04, BIT(13), 0);
+
+static SUNXI_CCU_GATE(bus_fe0_clk,      "bus-fe0",      "bus-de",
+                      0x08, BIT(0), 0);
+static SUNXI_CCU_GATE(bus_fe1_clk,      "bus-fe1",      "bus-de",
+                      0x08, BIT(1), 0);
+static SUNXI_CCU_GATE(bus_fe2_clk,      "bus-fe2",      "bus-de",
+                      0x08, BIT(2), 0);
+static SUNXI_CCU_GATE(bus_deu0_clk,     "bus-deu0",     "bus-de",
+                      0x08, BIT(4), 0);
+static SUNXI_CCU_GATE(bus_deu1_clk,     "bus-deu1",     "bus-de",
+                      0x08, BIT(5), 0);
+static SUNXI_CCU_GATE(bus_be0_clk,      "bus-be0",      "bus-de",
+                      0x08, BIT(8), 0);
+static SUNXI_CCU_GATE(bus_be1_clk,      "bus-be1",      "bus-de",
+                      0x08, BIT(9), 0);
+static SUNXI_CCU_GATE(bus_be2_clk,      "bus-be2",      "bus-de",
+                      0x08, BIT(10), 0);
+static SUNXI_CCU_GATE(bus_drc0_clk,     "bus-drc0",     "bus-de",
+                      0x08, BIT(12), 0);
+static SUNXI_CCU_GATE(bus_drc1_clk,     "bus-drc1",     "bus-de",
+                      0x08, BIT(13), 0);
+
+static SUNXI_CCU_M(fe0_div_clk, "fe0-div", "de", 0x20, 0, 4, 0);
+static SUNXI_CCU_M(fe1_div_clk, "fe1-div", "de", 0x20, 4, 4, 0);
+static SUNXI_CCU_M(fe2_div_clk, "fe2-div", "de", 0x20, 8, 4, 0);
+static SUNXI_CCU_M(be0_div_clk, "be0-div", "de", 0x20, 16, 4, 0);
+static SUNXI_CCU_M(be1_div_clk, "be1-div", "de", 0x20, 20, 4, 0);
+static SUNXI_CCU_M(be2_div_clk, "be2-div", "de", 0x20, 24, 4, 0);
+
+static struct ccu_common *sun9i_a80_de_clks[] = {
+        &fe0_clk.common,
+        &fe1_clk.common,
+        &fe2_clk.common,
+        &iep_deu0_clk.common,
+        &iep_deu1_clk.common,
+        &be0_clk.common,
+        &be1_clk.common,
+        &be2_clk.common,
+        &iep_drc0_clk.common,
+        &iep_drc1_clk.common,
+        &merge_clk.common,
+
+        &dram_fe0_clk.common,
+        &dram_fe1_clk.common,
+        &dram_fe2_clk.common,
+        &dram_deu0_clk.common,
+        &dram_deu1_clk.common,
+        &dram_be0_clk.common,
+        &dram_be1_clk.common,
+        &dram_be2_clk.common,
+        &dram_drc0_clk.common,
+        &dram_drc1_clk.common,
+
+        &bus_fe0_clk.common,
+        &bus_fe1_clk.common,
+        &bus_fe2_clk.common,
+        &bus_deu0_clk.common,
+        &bus_deu1_clk.common,
+        &bus_be0_clk.common,
+        &bus_be1_clk.common,
+        &bus_be2_clk.common,
+        &bus_drc0_clk.common,
+        &bus_drc1_clk.common,
+
+        &fe0_div_clk.common,
+        &fe1_div_clk.common,
+        &fe2_div_clk.common,
+        &be0_div_clk.common,
+        &be1_div_clk.common,
+        &be2_div_clk.common,
+};
+
+static struct clk_hw_onecell_data sun9i_a80_de_hw_clks = {
+        .hws    = {
+                [CLK_FE0]       = &fe0_clk.common.hw,
+                [CLK_FE1]       = &fe1_clk.common.hw,
+                [CLK_FE2]       = &fe2_clk.common.hw,
+                [CLK_IEP_DEU0]  = &iep_deu0_clk.common.hw,
+                [CLK_IEP_DEU1]  = &iep_deu1_clk.common.hw,
+                [CLK_BE0]       = &be0_clk.common.hw,
+                [CLK_BE1]       = &be1_clk.common.hw,
+                [CLK_BE2]       = &be2_clk.common.hw,
+                [CLK_IEP_DRC0]  = &iep_drc0_clk.common.hw,
+                [CLK_IEP_DRC1]  = &iep_drc1_clk.common.hw,
+                [CLK_MERGE]     = &merge_clk.common.hw,
+
+                [CLK_DRAM_FE0]  = &dram_fe0_clk.common.hw,
+                [CLK_DRAM_FE1]  = &dram_fe1_clk.common.hw,
+                [CLK_DRAM_FE2]  = &dram_fe2_clk.common.hw,
+                [CLK_DRAM_DEU0] = &dram_deu0_clk.common.hw,
+                [CLK_DRAM_DEU1] = &dram_deu1_clk.common.hw,
+                [CLK_DRAM_BE0]  = &dram_be0_clk.common.hw,
+                [CLK_DRAM_BE1]  = &dram_be1_clk.common.hw,
+                [CLK_DRAM_BE2]  = &dram_be2_clk.common.hw,
+                [CLK_DRAM_DRC0] = &dram_drc0_clk.common.hw,
+                [CLK_DRAM_DRC1] = &dram_drc1_clk.common.hw,
+
+                [CLK_BUS_FE0]   = &bus_fe0_clk.common.hw,
+                [CLK_BUS_FE1]   = &bus_fe1_clk.common.hw,
+                [CLK_BUS_FE2]   = &bus_fe2_clk.common.hw,
+                [CLK_BUS_DEU0]  = &bus_deu0_clk.common.hw,
+                [CLK_BUS_DEU1]  = &bus_deu1_clk.common.hw,
+                [CLK_BUS_BE0]   = &bus_be0_clk.common.hw,
+                [CLK_BUS_BE1]   = &bus_be1_clk.common.hw,
+                [CLK_BUS_BE2]   = &bus_be2_clk.common.hw,
+                [CLK_BUS_DRC0]  = &bus_drc0_clk.common.hw,
+                [CLK_BUS_DRC1]  = &bus_drc1_clk.common.hw,
+
+                [CLK_FE0_DIV]   = &fe0_div_clk.common.hw,
+                [CLK_FE1_DIV]   = &fe1_div_clk.common.hw,
+                [CLK_FE2_DIV]   = &fe2_div_clk.common.hw,
+                [CLK_BE0_DIV]   = &be0_div_clk.common.hw,
+                [CLK_BE1_DIV]   = &be1_div_clk.common.hw,
+                [CLK_BE2_DIV]   = &be2_div_clk.common.hw,
+        },
+        .num    = CLK_NUMBER,
+};
+
+static struct ccu_reset_map sun9i_a80_de_resets[] = {
+        [RST_FE0]       = { 0x0c, BIT(0) },
+        [RST_FE1]       = { 0x0c, BIT(1) },
+        [RST_FE2]       = { 0x0c, BIT(2) },
+        [RST_DEU0]      = { 0x0c, BIT(4) },
+        [RST_DEU1]      = { 0x0c, BIT(5) },
+        [RST_BE0]       = { 0x0c, BIT(8) },
+        [RST_BE1]       = { 0x0c, BIT(9) },
+        [RST_BE2]       = { 0x0c, BIT(10) },
+        [RST_DRC0]      = { 0x0c, BIT(12) },
+        [RST_DRC1]      = { 0x0c, BIT(13) },
+        [RST_MERGE]     = { 0x0c, BIT(20) },
+};
+
+static const struct sunxi_ccu_desc sun9i_a80_de_clk_desc = {
+        .ccu_clks       = sun9i_a80_de_clks,
+        .num_ccu_clks   = ARRAY_SIZE(sun9i_a80_de_clks),
+
+        .hw_clks        = &sun9i_a80_de_hw_clks,
+
+        .resets         = sun9i_a80_de_resets,
+        .num_resets     = ARRAY_SIZE(sun9i_a80_de_resets),
+};
+
+static int sun9i_a80_de_clk_probe(struct platform_device *pdev)
+{
+        struct resource *res;
+        struct clk *bus_clk;
+        struct reset_control *rstc;
+        void __iomem *reg;
+        int ret;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        reg = devm_ioremap_resource(&pdev->dev, res);
+        if (IS_ERR(reg))
+                return PTR_ERR(reg);
+
+        bus_clk = devm_clk_get(&pdev->dev, "bus");
+        if (IS_ERR(bus_clk)) {
+                ret = PTR_ERR(bus_clk);
+                if (ret != -EPROBE_DEFER)
+                        dev_err(&pdev->dev, "Couldn't get bus clk: %d\n", ret);
+                return ret;
+        }
+
+        rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
+        if (IS_ERR(rstc)) {
+                ret = PTR_ERR(bus_clk);
+                if (ret != -EPROBE_DEFER)
+                        dev_err(&pdev->dev,
+                                "Couldn't get reset control: %d\n", ret);
+                return ret;
+        }
+
+        /* The bus clock needs to be enabled for us to access the registers */
+        ret = clk_prepare_enable(bus_clk);
+        if (ret) {
+                dev_err(&pdev->dev, "Couldn't enable bus clk: %d\n", ret);
+                return ret;
+        }
+
+        /* The reset control needs to be asserted for the controls to work */
+        ret = reset_control_deassert(rstc);
+        if (ret) {
+                dev_err(&pdev->dev,
+                        "Couldn't deassert reset control: %d\n", ret);
+                goto err_disable_clk;
+        }
+
+        ret = sunxi_ccu_probe(pdev->dev.of_node, reg,
+                              &sun9i_a80_de_clk_desc);
+        if (ret)
+                goto err_assert_reset;
+
+        return 0;
+
+err_assert_reset:
+        reset_control_assert(rstc);
+err_disable_clk:
+        clk_disable_unprepare(bus_clk);
+        return ret;
+}
+
+static const struct of_device_id sun9i_a80_de_clk_ids[] = {
+        { .compatible = "allwinner,sun9i-a80-de-clks" },
+        { }
+};
+
+static struct platform_driver sun9i_a80_de_clk_driver = {
+        .probe  = sun9i_a80_de_clk_probe,
+        .driver = {
+                .name   = "sun9i-a80-de-clks",
+                .of_match_table = sun9i_a80_de_clk_ids,
+        },
+};
+builtin_platform_driver(sun9i_a80_de_clk_driver);
diff --git a/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.h b/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.h
new file mode 100644
index 000000000000..a4769041e40f
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu-sun9i-a80-de.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2016 Chen-Yu Tsai
+ *
+ * Chen-Yu Tsai <wens@csie.org>
+ *
+ * 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_SUN9I_A80_DE_H_
+#define _CCU_SUN9I_A80_DE_H_
+
+#include <dt-bindings/clock/sun9i-a80-de.h>
+#include <dt-bindings/reset/sun9i-a80-de.h>
+
+/* Intermediary clock dividers are not exported */
+#define CLK_FE0_DIV     31
+#define CLK_FE1_DIV     32
+#define CLK_FE2_DIV     33
+#define CLK_BE0_DIV     34
+#define CLK_BE1_DIV     35
+#define CLK_BE2_DIV     36
+
+#define CLK_NUMBER      (CLK_BE2_DIV + 1)
+
+#endif /* _CCU_SUN9I_A80_DE_H_ */
diff --git a/include/dt-bindings/clock/sun9i-a80-de.h b/include/dt-bindings/clock/sun9i-a80-de.h
new file mode 100644
index 000000000000..3dad6c3cd131
--- /dev/null
+++ b/include/dt-bindings/clock/sun9i-a80-de.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2016 Chen-Yu Tsai <wens@csie.org>
+ *
+ * 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_CLOCK_SUN9I_A80_DE_H_
+#define _DT_BINDINGS_CLOCK_SUN9I_A80_DE_H_
+
+#define CLK_FE0                 0
+#define CLK_FE1                 1
+#define CLK_FE2                 2
+#define CLK_IEP_DEU0            3
+#define CLK_IEP_DEU1            4
+#define CLK_BE0                 5
+#define CLK_BE1                 6
+#define CLK_BE2                 7
+#define CLK_IEP_DRC0            8
+#define CLK_IEP_DRC1            9
+#define CLK_MERGE               10
+
+#define CLK_DRAM_FE0            11
+#define CLK_DRAM_FE1            12
+#define CLK_DRAM_FE2            13
+#define CLK_DRAM_DEU0           14
+#define CLK_DRAM_DEU1           15
+#define CLK_DRAM_BE0            16
+#define CLK_DRAM_BE1            17
+#define CLK_DRAM_BE2            18
+#define CLK_DRAM_DRC0           19
+#define CLK_DRAM_DRC1           20
+
+#define CLK_BUS_FE0             21
+#define CLK_BUS_FE1             22
+#define CLK_BUS_FE2             23
+#define CLK_BUS_DEU0            24
+#define CLK_BUS_DEU1            25
+#define CLK_BUS_BE0             26
+#define CLK_BUS_BE1             27
+#define CLK_BUS_BE2             28
+#define CLK_BUS_DRC0            29
+#define CLK_BUS_DRC1            30
+
+#endif /* _DT_BINDINGS_CLOCK_SUN9I_A80_DE_H_ */
diff --git a/include/dt-bindings/reset/sun9i-a80-de.h b/include/dt-bindings/reset/sun9i-a80-de.h
new file mode 100644
index 000000000000..205072770171
--- /dev/null
+++ b/include/dt-bindings/reset/sun9i-a80-de.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2016 Chen-Yu Tsai <wens@csie.org>
+ *
+ * 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_RESET_SUN9I_A80_DE_H_
+#define _DT_BINDINGS_RESET_SUN9I_A80_DE_H_
+
+#define RST_FE0         0
+#define RST_FE1         1
+#define RST_FE2         2
+#define RST_DEU0        3
+#define RST_DEU1        4
+#define RST_BE0         5
+#define RST_BE1         6
+#define RST_BE2         7
+#define RST_DRC0        8
+#define RST_DRC1        9
+#define RST_MERGE       10
+
+#endif /* _DT_BINDINGS_RESET_SUN9I_A80_DE_H_ */