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Groups > linux.kernel > #1615842 > unrolled thread
| Started by | Icenowy Zheng <icenowy@aosc.io> |
|---|---|
| First post | 2017-04-04 12:00 +0200 |
| Last post | 2017-04-04 17:50 +0200 |
| Articles | 7 — 2 participants |
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[PATCH v4 0/5] Add support for the R_CCU on Allwinner H3/A64 SoCs Icenowy Zheng <icenowy@aosc.io> - 2017-04-04 12:00 +0200
[PATCH v4 1/5] dt-bindings: update device tree binding for Allwinner PRCM CCUs Icenowy Zheng <icenowy@aosc.io> - 2017-04-04 12:00 +0200
[PATCH v4 2/5] clk: sunxi-ng: add support for PRCM CCUs Icenowy Zheng <icenowy@aosc.io> - 2017-04-04 12:00 +0200
[PATCH v4 3/5] arm64: allwinner: a64: add r_ccu node Icenowy Zheng <icenowy@aosc.io> - 2017-04-04 12:20 +0200
[PATCH v4 4/5] ARM: sunxi: h3/h5: switch apb0-related clocks to r_ccu Icenowy Zheng <icenowy@aosc.io> - 2017-04-04 12:40 +0200
[PATCH v4 5/5] arm64: allwinner: a64: add R_PIO pinctrl node Icenowy Zheng <icenowy@aosc.io> - 2017-04-04 12:50 +0200
Re: [PATCH v4 0/5] Add support for the R_CCU on Allwinner H3/A64 SoCs Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-04-04 17:50 +0200
| From | Icenowy Zheng <icenowy@aosc.io> |
|---|---|
| Date | 2017-04-04 12:00 +0200 |
| Subject | [PATCH v4 0/5] Add support for the R_CCU on Allwinner H3/A64 SoCs |
| Message-ID | <tstpL-39f-5@gated-at.bofh.it> |
Allwinner SoCs after sun6i-a31 nearly all have a R_CCU in PRCM part. (V3s and R40 do not have it, as they have even no PRCM) This patch adds support for the ones on H3/A64. Some clock/reset values are reserved for easier extending the support to A31/A23, but for this I think some changes to the PRCM MFD should be made, see [1] (Although this is only a sketch). The r_pio device node is also added for A64, as the driver is already merged, and its depends (r_ccu) is now met. [1] https://github.com/wens/linux/commits/sunxi-ng-prcm Icenowy Zheng (5): dt-bindings: update device tree binding for Allwinner PRCM CCUs clk: sunxi-ng: add support for PRCM CCUs arm64: allwinner: a64: add r_ccu node ARM: sunxi: h3/h5: switch apb0-related clocks to r_ccu arm64: allwinner: a64: add R_PIO pinctrl node .../devicetree/bindings/clock/sunxi-ccu.txt | 17 +- arch/arm/boot/dts/sunxi-h3-h5.dtsi | 45 ++--- arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 29 +++ drivers/clk/sunxi-ng/Kconfig | 6 + drivers/clk/sunxi-ng/Makefile | 1 + drivers/clk/sunxi-ng/ccu-sun8i-r.c | 213 +++++++++++++++++++++ drivers/clk/sunxi-ng/ccu-sun8i-r.h | 27 +++ include/dt-bindings/clock/sun8i-r-ccu.h | 59 ++++++ include/dt-bindings/reset/sun8i-r-ccu.h | 53 +++++ 9 files changed, 418 insertions(+), 32 deletions(-) create mode 100644 drivers/clk/sunxi-ng/ccu-sun8i-r.c create mode 100644 drivers/clk/sunxi-ng/ccu-sun8i-r.h create mode 100644 include/dt-bindings/clock/sun8i-r-ccu.h create mode 100644 include/dt-bindings/reset/sun8i-r-ccu.h -- 2.12.2
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| From | Icenowy Zheng <icenowy@aosc.io> |
|---|---|
| Date | 2017-04-04 12:00 +0200 |
| Subject | [PATCH v4 1/5] dt-bindings: update device tree binding for Allwinner PRCM CCUs |
| Message-ID | <tstpM-39f-19@gated-at.bofh.it> |
| In reply to | #1615842 |
From: Icenowy Zheng <icenowy@aosc.xyz>
Many Allwinner SoCs after A31 have a CCU in PRCM block.
Give the ones on H3 and A64 compatible strings.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Acked-by: Rob Herring <robh@kernel.org>
---
Changes in v4:
- Add Rob's ACK.
Changes in v3:
- Removed frequency info of iosc in this device tree binding document.
Changes in v2:
- Add iosc for R_CCU's on H3/A64.
Documentation/devicetree/bindings/clock/sunxi-ccu.txt | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/clock/sunxi-ccu.txt b/Documentation/devicetree/bindings/clock/sunxi-ccu.txt
index 68512aa398a9..e9c5a1d9834a 100644
--- a/Documentation/devicetree/bindings/clock/sunxi-ccu.txt
+++ b/Documentation/devicetree/bindings/clock/sunxi-ccu.txt
@@ -7,9 +7,11 @@ Required properties :
- "allwinner,sun8i-a23-ccu"
- "allwinner,sun8i-a33-ccu"
- "allwinner,sun8i-h3-ccu"
+ - "allwinner,sun8i-h3-r-ccu"
- "allwinner,sun8i-v3s-ccu"
- "allwinner,sun9i-a80-ccu"
- "allwinner,sun50i-a64-ccu"
+ - "allwinner,sun50i-a64-r-ccu"
- "allwinner,sun50i-h5-ccu"
- reg: Must contain the registers base address and length
@@ -20,7 +22,10 @@ Required properties :
- #clock-cells : must contain 1
- #reset-cells : must contain 1
-Example:
+For the PRCM CCUs on H3/A64, one more clock is needed:
+- "iosc": the SoC's internal frequency oscillator
+
+Example for generic CCU:
ccu: clock@01c20000 {
compatible = "allwinner,sun8i-h3-ccu";
reg = <0x01c20000 0x400>;
@@ -29,3 +34,13 @@ ccu: clock@01c20000 {
#clock-cells = <1>;
#reset-cells = <1>;
};
+
+Example for PRCM CCU:
+r_ccu: clock@01f01400 {
+ compatible = "allwinner,sun50i-a64-r-ccu";
+ reg = <0x01f01400 0x100>;
+ clocks = <&osc24M>, <&osc32k>, <&iosc>;
+ clock-names = "hosc", "losc", "iosc";
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+};
--
2.12.2
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| From | Icenowy Zheng <icenowy@aosc.io> |
|---|---|
| Date | 2017-04-04 12:00 +0200 |
| Subject | [PATCH v4 2/5] clk: sunxi-ng: add support for PRCM CCUs |
| Message-ID | <tstpM-39f-31@gated-at.bofh.it> |
| In reply to | #1615842 |
From: Icenowy Zheng <icenowy@aosc.xyz>
SoCs after A31 has a clock controller module in the PRCM part.
Support the clock controller module on H3/5 and A64 now.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
---
Changes in v4:
- Add missing twd items in *_ccu_clks.
Changes in v3:
- Change osc32000 mux to iosc, as its frequency varies between SoCs. (And
none of them is really 32000Hz)
Changes in v2:
- Replace all sun6i to sun8i, as this driver currently doesn't really
support sun6i(A31).
- Add osc32000 mux for ar100 clk. (Note: the frequency is proven to be wrong
during the development of PATCH v3).
- Rename some clocks.
- Add gate of TWD (Trusted Watchdog). There's no reset for TWD.
- Removed reset of PIO, which doesn't exist really.
drivers/clk/sunxi-ng/Kconfig | 6 +
drivers/clk/sunxi-ng/Makefile | 1 +
drivers/clk/sunxi-ng/ccu-sun8i-r.c | 213 ++++++++++++++++++++++++++++++++
drivers/clk/sunxi-ng/ccu-sun8i-r.h | 27 ++++
include/dt-bindings/clock/sun8i-r-ccu.h | 59 +++++++++
include/dt-bindings/reset/sun8i-r-ccu.h | 53 ++++++++
6 files changed, 359 insertions(+)
create mode 100644 drivers/clk/sunxi-ng/ccu-sun8i-r.c
create mode 100644 drivers/clk/sunxi-ng/ccu-sun8i-r.h
create mode 100644 include/dt-bindings/clock/sun8i-r-ccu.h
create mode 100644 include/dt-bindings/reset/sun8i-r-ccu.h
diff --git a/drivers/clk/sunxi-ng/Kconfig b/drivers/clk/sunxi-ng/Kconfig
index 8af8f4be8e3b..fbd3f8cd5c22 100644
--- a/drivers/clk/sunxi-ng/Kconfig
+++ b/drivers/clk/sunxi-ng/Kconfig
@@ -151,4 +151,10 @@ config SUN9I_A80_CCU
default MACH_SUN9I
depends on MACH_SUN9I || COMPILE_TEST
+config SUN8I_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..0ec02fe14c50 100644
--- a/drivers/clk/sunxi-ng/Makefile
+++ b/drivers/clk/sunxi-ng/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_SUN8I_A23_CCU) += ccu-sun8i-a23.o
obj-$(CONFIG_SUN8I_A33_CCU) += ccu-sun8i-a33.o
obj-$(CONFIG_SUN8I_H3_CCU) += ccu-sun8i-h3.o
obj-$(CONFIG_SUN8I_V3S_CCU) += ccu-sun8i-v3s.o
+obj-$(CONFIG_SUN8I_R_CCU) += ccu-sun8i-r.o
obj-$(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-sun8i-r.c b/drivers/clk/sunxi-ng/ccu-sun8i-r.c
new file mode 100644
index 000000000000..0d027d53dbdf
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu-sun8i-r.c
@@ -0,0 +1,213 @@
+/*
+ * Copyright (c) 2016 Icenowy Zheng <icenowy@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-sun8i-r.h"
+
+static const char * const ar100_parents[] = { "osc32k", "osc24M",
+ "pll-periph0", "iosc" };
+
+static struct ccu_div ar100_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("ar100",
+ ar100_parents,
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static CLK_FIXED_FACTOR(ahb0_clk, "ahb0", "ar100", 1, 1, 0);
+
+static struct ccu_div apb0_clk = {
+ .div = _SUNXI_CCU_DIV_FLAGS(0, 2, CLK_DIVIDER_POWER_OF_TWO),
+
+ .common = {
+ .reg = 0x0c,
+ .hw.init = CLK_HW_INIT("apb0",
+ "ahb0",
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static SUNXI_CCU_GATE(apb0_pio_clk, "apb0-pio", "apb0",
+ 0x28, BIT(0), 0);
+static SUNXI_CCU_GATE(apb0_ir_clk, "apb0-ir", "apb0",
+ 0x28, BIT(1), 0);
+static SUNXI_CCU_GATE(apb0_timer_clk, "apb0-timer", "apb0",
+ 0x28, BIT(2), 0);
+static SUNXI_CCU_GATE(apb0_rsb_clk, "apb0-rsb", "apb0",
+ 0x28, BIT(3), 0);
+static SUNXI_CCU_GATE(apb0_uart_clk, "apb0-uart", "apb0",
+ 0x28, BIT(4), 0);
+static SUNXI_CCU_GATE(apb0_i2c_clk, "apb0-i2c", "apb0",
+ 0x28, BIT(6), 0);
+static SUNXI_CCU_GATE(apb0_twd_clk, "apb0-twd", "apb0",
+ 0x28, BIT(7), 0);
+
+static const char * const r_mod0_default_parents[] = { "osc32K", "osc24M" };
+static SUNXI_CCU_MP_WITH_MUX_GATE(ir_clk, "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[] = {
+ &ar100_clk.common,
+ &apb0_clk.common,
+ &apb0_pio_clk.common,
+ &apb0_ir_clk.common,
+ &apb0_timer_clk.common,
+ &apb0_uart_clk.common,
+ &apb0_i2c_clk.common,
+ &apb0_twd_clk.common,
+ &ir_clk.common,
+};
+
+static struct ccu_common *sun50i_a64_r_ccu_clks[] = {
+ &ar100_clk.common,
+ &apb0_clk.common,
+ &apb0_pio_clk.common,
+ &apb0_ir_clk.common,
+ &apb0_timer_clk.common,
+ &apb0_rsb_clk.common,
+ &apb0_uart_clk.common,
+ &apb0_i2c_clk.common,
+ &apb0_twd_clk.common,
+ &ir_clk.common,
+};
+
+static struct clk_hw_onecell_data sun8i_h3_r_hw_clks = {
+ .hws = {
+ [CLK_AR100] = &ar100_clk.common.hw,
+ [CLK_AHB0] = &ahb0_clk.hw,
+ [CLK_APB0] = &apb0_clk.common.hw,
+ [CLK_APB0_PIO] = &apb0_pio_clk.common.hw,
+ [CLK_APB0_IR] = &apb0_ir_clk.common.hw,
+ [CLK_APB0_TIMER] = &apb0_timer_clk.common.hw,
+ [CLK_APB0_UART] = &apb0_uart_clk.common.hw,
+ [CLK_APB0_I2C] = &apb0_i2c_clk.common.hw,
+ [CLK_APB0_TWD] = &apb0_twd_clk.common.hw,
+ [CLK_IR] = &ir_clk.common.hw,
+ },
+ .num = CLK_NUMBER,
+};
+
+static struct clk_hw_onecell_data sun50i_a64_r_hw_clks = {
+ .hws = {
+ [CLK_AR100] = &ar100_clk.common.hw,
+ [CLK_AHB0] = &ahb0_clk.hw,
+ [CLK_APB0] = &apb0_clk.common.hw,
+ [CLK_APB0_PIO] = &apb0_pio_clk.common.hw,
+ [CLK_APB0_IR] = &apb0_ir_clk.common.hw,
+ [CLK_APB0_TIMER] = &apb0_timer_clk.common.hw,
+ [CLK_APB0_RSB] = &apb0_rsb_clk.common.hw,
+ [CLK_APB0_UART] = &apb0_uart_clk.common.hw,
+ [CLK_APB0_I2C] = &apb0_i2c_clk.common.hw,
+ [CLK_APB0_TWD] = &apb0_twd_clk.common.hw,
+ [CLK_IR] = &ir_clk.common.hw,
+ },
+ .num = CLK_NUMBER,
+};
+
+static struct ccu_reset_map sun8i_h3_r_ccu_resets[] = {
+ [RST_APB0_IR] = { 0xb0, BIT(1) },
+ [RST_APB0_TIMER] = { 0xb0, BIT(2) },
+ [RST_APB0_UART] = { 0xb0, BIT(4) },
+ [RST_APB0_I2C] = { 0xb0, BIT(6) },
+};
+
+static struct ccu_reset_map sun50i_a64_r_ccu_resets[] = {
+ [RST_APB0_IR] = { 0xb0, BIT(1) },
+ [RST_APB0_TIMER] = { 0xb0, BIT(2) },
+ [RST_APB0_RSB] = { 0xb0, BIT(3) },
+ [RST_APB0_UART] = { 0xb0, BIT(4) },
+ [RST_APB0_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-sun8i-r.h b/drivers/clk/sunxi-ng/ccu-sun8i-r.h
new file mode 100644
index 000000000000..eaa431fd1d8f
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu-sun8i-r.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2016 Icenowy <icenowy@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_SUN8I_R_H
+#define _CCU_SUN8I_R_H_
+
+#include <dt-bindings/clock/sun8i-r-ccu.h>
+#include <dt-bindings/reset/sun8i-r-ccu.h>
+
+/* AHB/APB bus clocks are not exported */
+#define CLK_AHB0 1
+#define CLK_APB0 2
+
+#define CLK_NUMBER (CLK_APB0_TWD + 1)
+
+#endif /* _CCU_SUN8I_R_H */
diff --git a/include/dt-bindings/clock/sun8i-r-ccu.h b/include/dt-bindings/clock/sun8i-r-ccu.h
new file mode 100644
index 000000000000..779d20aa0d05
--- /dev/null
+++ b/include/dt-bindings/clock/sun8i-r-ccu.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2016 Icenowy Zheng <icenowy@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_SUN8I_R_CCU_H_
+#define _DT_BINDINGS_CLK_SUN8I_R_CCU_H_
+
+#define CLK_AR100 0
+
+#define CLK_APB0_PIO 3
+#define CLK_APB0_IR 4
+#define CLK_APB0_TIMER 5
+#define CLK_APB0_RSB 6
+#define CLK_APB0_UART 7
+/* 8 is reserved for CLK_APB0_W1 on A31 */
+#define CLK_APB0_I2C 9
+#define CLK_APB0_TWD 10
+
+#define CLK_IR 11
+
+#endif /* _DT_BINDINGS_CLK_SUN8I_R_CCU_H_ */
diff --git a/include/dt-bindings/reset/sun8i-r-ccu.h b/include/dt-bindings/reset/sun8i-r-ccu.h
new file mode 100644
index 000000000000..4ba64f3d6fc9
--- /dev/null
+++ b/include/dt-bindings/reset/sun8i-r-ccu.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2016 Icenowy Zheng <icenowy@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_SUN8I_R_CCU_H_
+#define _DT_BINDINGS_RST_SUN8I_R_CCU_H_
+
+#define RST_APB0_IR 0
+#define RST_APB0_TIMER 1
+#define RST_APB0_RSB 2
+#define RST_APB0_UART 3
+/* 4 is reserved for RST_APB0_W1 on A31 */
+#define RST_APB0_I2C 5
+
+#endif /* _DT_BINDINGS_RST_SUN8I_R_CCU_H_ */
--
2.12.2
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| From | Icenowy Zheng <icenowy@aosc.io> |
|---|---|
| Date | 2017-04-04 12:20 +0200 |
| Subject | [PATCH v4 3/5] arm64: allwinner: a64: add r_ccu node |
| Message-ID | <tstJ7-3vl-7@gated-at.bofh.it> |
| In reply to | #1615842 |
From: Icenowy Zheng <icenowy@aosc.xyz>
A64 SoC have a CCU (r_ccu) in PRCM block.
Add the device node for it.
The mux 3 of R_CCU is an internal oscillator, which is 16MHz according
to the user manual, and has only 30% accuracy based on our experience
on older SoCs. The real mesaured value of it on two Pine64 boards is
around 11MHz, which is around 70% of 16MHz.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
---
Changes in v4:
- Temporarily dropped the CCU headers.
Changes in v3:
- Change osc32000 to iosc, which is 16MHz plus minus 30%, according to the
RTC chapter of the user manual and our experiences on A33.
Changes in v2:
- Add osc32000.
arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 1c64ea2d23f9..1d4e5bcced0c 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -98,6 +98,14 @@
clock-output-names = "osc32k";
};
+ iosc: internal-osc-clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <16000000>;
+ clock-accuracy = <300000000>;
+ clock-output-names = "iosc";
+ };
+
psci {
compatible = "arm,psci-0.2";
method = "smc";
@@ -392,5 +400,14 @@
interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
};
+
+ r_ccu: clock@1f01400 {
+ compatible = "allwinner,sun50i-a64-r-ccu";
+ reg = <0x01f01400 0x100>;
+ clocks = <&osc24M>, <&osc32k>, <&iosc>;
+ clock-names = "hosc", "losc", "iosc";
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+ };
};
};
--
2.12.2
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| From | Icenowy Zheng <icenowy@aosc.io> |
|---|---|
| Date | 2017-04-04 12:40 +0200 |
| Subject | [PATCH v4 4/5] ARM: sunxi: h3/h5: switch apb0-related clocks to r_ccu |
| Message-ID | <tsu2u-3DY-5@gated-at.bofh.it> |
| In reply to | #1615842 |
From: Icenowy Zheng <icenowy@aosc.xyz>
Now we have driver for the PRCM CCU, switch to use it instead of
old-style clock nodes for apb0-related clocks in sunxi-h3-h5.dtsi .
The mux 3 of R_CCU is still the internal oscillator, which is said to be
16MHz plus minus 30%, and get a measured value of 15MHz~16MHz on my two
H3 boards and one H5 board.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
---
Changes in v4:
- Temporarily dropped the CCU headers.
Changes in v3:
- Change osc32000 to iosc.
arch/arm/boot/dts/sunxi-h3-h5.dtsi | 45 ++++++++++++--------------------------
1 file changed, 14 insertions(+), 31 deletions(-)
diff --git a/arch/arm/boot/dts/sunxi-h3-h5.dtsi b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
index 6640ebfa6419..1aeeacb3a884 100644
--- a/arch/arm/boot/dts/sunxi-h3-h5.dtsi
+++ b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
@@ -68,31 +68,12 @@
clock-output-names = "osc32k";
};
- apb0: apb0_clk {
- compatible = "fixed-factor-clock";
+ iosc: internal-osc-clk {
#clock-cells = <0>;
- clock-div = <1>;
- clock-mult = <1>;
- clocks = <&osc24M>;
- clock-output-names = "apb0";
- };
-
- apb0_gates: clk@01f01428 {
- compatible = "allwinner,sun8i-h3-apb0-gates-clk",
- "allwinner,sun4i-a10-gates-clk";
- reg = <0x01f01428 0x4>;
- #clock-cells = <1>;
- clocks = <&apb0>;
- clock-indices = <0>, <1>;
- clock-output-names = "apb0_pio", "apb0_ir";
- };
-
- ir_clk: ir_clk@01f01454 {
- compatible = "allwinner,sun4i-a10-mod0-clk";
- reg = <0x01f01454 0x4>;
- #clock-cells = <0>;
- clocks = <&osc32k>, <&osc24M>;
- clock-output-names = "ir";
+ compatible = "fixed-clock";
+ clock-frequency = <16000000>;
+ clock-accuracy = <300000000>;
+ clock-output-names = "iosc";
};
};
@@ -576,9 +557,12 @@
<GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
};
- apb0_reset: reset@01f014b0 {
- reg = <0x01f014b0 0x4>;
- compatible = "allwinner,sun6i-a31-clock-reset";
+ r_ccu: clock@1f01400 {
+ compatible = "allwinner,sun50i-a64-r-ccu";
+ reg = <0x01f01400 0x100>;
+ clocks = <&osc24M>, <&osc32k>, <&iosc>;
+ clock-names = "hosc", "losc", "iosc";
+ #clock-cells = <1>;
#reset-cells = <1>;
};
@@ -589,9 +573,9 @@
ir: ir@01f02000 {
compatible = "allwinner,sun5i-a13-ir";
- clocks = <&apb0_gates 1>, <&ir_clk>;
+ clocks = <&r_ccu 4>, <&r_ccu 11>;
clock-names = "apb", "ir";
- resets = <&apb0_reset 1>;
+ resets = <&r_ccu 0>;
interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
reg = <0x01f02000 0x40>;
status = "disabled";
@@ -601,9 +585,8 @@
compatible = "allwinner,sun8i-h3-r-pinctrl";
reg = <0x01f02c00 0x400>;
interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&apb0_gates 0>, <&osc24M>, <&osc32k>;
+ clocks = <&r_ccu 3>, <&osc24M>, <&osc32k>;
clock-names = "apb", "hosc", "losc";
- resets = <&apb0_reset 0>;
gpio-controller;
#gpio-cells = <3>;
interrupt-controller;
--
2.12.2
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| From | Icenowy Zheng <icenowy@aosc.io> |
|---|---|
| Date | 2017-04-04 12:50 +0200 |
| Subject | [PATCH v4 5/5] arm64: allwinner: a64: add R_PIO pinctrl node |
| Message-ID | <tsucb-3HC-21@gated-at.bofh.it> |
| In reply to | #1615842 |
From: Icenowy Zheng <icenowy@aosc.xyz>
Allwinner A64 have a dedicated pin controller to manage the PL pin bank.
As the driver and the required clock support are added, add the device
node for it.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
---
arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 1d4e5bcced0c..6bc606b4d74d 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -409,5 +409,17 @@
#clock-cells = <1>;
#reset-cells = <1>;
};
+
+ r_pio: pinctrl@01f02c00 {
+ compatible = "allwinner,sun50i-a64-r-pinctrl";
+ reg = <0x01f02c00 0x400>;
+ interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&r_ccu 3>, <&osc24M>, <&osc32k>;
+ clock-names = "apb", "hosc", "losc";
+ gpio-controller;
+ #gpio-cells = <3>;
+ interrupt-controller;
+ #interrupt-cells = <3>;
+ };
};
};
--
2.12.2
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| From | Maxime Ripard <maxime.ripard@free-electrons.com> |
|---|---|
| Date | 2017-04-04 17:50 +0200 |
| Message-ID | <tsySv-6KL-33@gated-at.bofh.it> |
| In reply to | #1615842 |
[Multipart message — attachments visible in raw view] — view raw
On Tue, Apr 04, 2017 at 05:50:55PM +0800, Icenowy Zheng wrote: > Allwinner SoCs after sun6i-a31 nearly all have a R_CCU in PRCM part. > (V3s and R40 do not have it, as they have even no PRCM) > > This patch adds support for the ones on H3/A64. > > Some clock/reset values are reserved for easier extending the support to > A31/A23, but for this I think some changes to the PRCM MFD should be made, > see [1] (Although this is only a sketch). > > The r_pio device node is also added for A64, as the driver is already > merged, and its depends (r_ccu) is now met. Applied all, thanks! Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
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