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Subject[PATCH 1/5] dt-bindings: clock: Add Bitmain BM1880 SoC clock controller binding
Date
Add devicetree binding for Bitmain BM1880 SoC clock controller.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
.../bindings/clock/bitmain,bm1880-clk.txt | 47 +++++++++++
include/dt-bindings/clock/bm1880-clock.h | 82 +++++++++++++++++++
2 files changed, 129 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/bitmain,bm1880-clk.txt
create mode 100644 include/dt-bindings/clock/bm1880-clock.h

diff --git a/Documentation/devicetree/bindings/clock/bitmain,bm1880-clk.txt b/Documentation/devicetree/bindings/clock/bitmain,bm1880-clk.txt
new file mode 100644
index 000000000000..9c967095d430
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/bitmain,bm1880-clk.txt
@@ -0,0 +1,47 @@
+* Bitmain BM1880 Clock Controller
+
+The Bitmain BM1880 clock controler generates and supplies clock to
+various peripherals within the SoC.
+
+Required Properties:
+
+- compatible: Should be "bitmain,bm1880-clk"
+- reg : Register address and size of PLL and SYS control domains
+- reg-names : Register domain names: "pll" and "sys"
+- clocks : Phandle of the input reference clock.
+- #clock-cells: Should be 1.
+
+Each clock is assigned an identifier, and client nodes can use this identifier
+to specify the clock which they consume.
+
+All available clocks are defined as preprocessor macros in corresponding
+dt-bindings/clock/bm1880-clock.h header and can be used in device tree sources.
+
+External clocks:
+
+The osc clock used as the input for the plls is generated outside the SoC.
+It is expected that it is defined using standard clock bindings as "osc".
+
+Example:
+
+ clk: clock-controller@800 {
+ compatible = "bitmain,bm1880-clk";
+ reg = <0xe8 0x0c>,<0x800 0xb0>;
+ reg-names = "pll", "sys";
+ clocks = <&osc>;
+ #clock-cells = <1>;
+ };
+
+Example: UART controller node that consumes clock generated by the clock
+controller:
+
+ uart0: serial@58018000 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x0 0x58018000 0x0 0x2000>;
+ clocks = <&clk BM1880_CLK_UART_500M>;
+ <&clk BM1880_CLK_APB_UART>;
+ clock-names = "baudclk", "apb_pclk";
+ interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ };
diff --git a/include/dt-bindings/clock/bm1880-clock.h b/include/dt-bindings/clock/bm1880-clock.h
new file mode 100644
index 000000000000..764472b9a4fd
--- /dev/null
+++ b/include/dt-bindings/clock/bm1880-clock.h
@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Device Tree binding constants for Bitmain BM1880 SoC
+ *
+ * Copyright (c) 2019 Linaro Ltd.
+ */
+
+#ifndef __DT_BINDINGS_CLOCK_BM1880_H
+#define __DT_BINDINGS_CLOCK_BM1880_H
+
+#define BM1880_CLK_OSC 0
+#define BM1880_CLK_MPLL 1
+#define BM1880_CLK_SPLL 2
+#define BM1880_CLK_FPLL 3
+#define BM1880_CLK_DDRPLL 4
+#define BM1880_CLK_A53 5
+#define BM1880_CLK_50M_A53 6
+#define BM1880_CLK_AHB_ROM 7
+#define BM1880_CLK_AXI_SRAM 8
+#define BM1880_CLK_DDR_AXI 9
+#define BM1880_CLK_EFUSE 10
+#define BM1880_CLK_APB_EFUSE 11
+#define BM1880_CLK_AXI5_EMMC 12
+#define BM1880_CLK_EMMC 13
+#define BM1880_CLK_100K_EMMC 14
+#define BM1880_CLK_AXI5_SD 15
+#define BM1880_CLK_SD 16
+#define BM1880_CLK_100K_SD 17
+#define BM1880_CLK_500M_ETH0 18
+#define BM1880_CLK_AXI4_ETH0 19
+#define BM1880_CLK_500M_ETH1 20
+#define BM1880_CLK_AXI4_ETH1 21
+#define BM1880_CLK_AXI1_GDMA 22
+#define BM1880_CLK_APB_GPIO 23
+#define BM1880_CLK_APB_GPIO_INTR 24
+#define BM1880_CLK_GPIO_DB 25
+#define BM1880_CLK_AXI1_MINER 26
+#define BM1880_CLK_AHB_SF 27
+#define BM1880_CLK_SDMA_AXI 28
+#define BM1880_CLK_SDMA_AUD 29
+#define BM1880_CLK_APB_I2C 30
+#define BM1880_CLK_APB_WDT 31
+#define BM1880_CLK_APB_JPEG 32
+#define BM1880_CLK_JPEG_AXI 33
+#define BM1880_CLK_AXI5_NF 34
+#define BM1880_CLK_APB_NF 35
+#define BM1880_CLK_NF 36
+#define BM1880_CLK_APB_PWM 37
+#define BM1880_CLK_DIV_0_RV 38
+#define BM1880_CLK_DIV_1_RV 39
+#define BM1880_CLK_MUX_RV 40
+#define BM1880_CLK_RV 41
+#define BM1880_CLK_APB_SPI 42
+#define BM1880_CLK_TPU_AXI 43
+#define BM1880_CLK_DIV_UART_500M 44
+#define BM1880_CLK_UART_500M 45
+#define BM1880_CLK_APB_UART 46
+#define BM1880_CLK_APB_I2S 47
+#define BM1880_CLK_AXI4_USB 48
+#define BM1880_CLK_APB_USB 49
+#define BM1880_CLK_125M_USB 50
+#define BM1880_CLK_33K_USB 51
+#define BM1880_CLK_DIV_12M_USB 52
+#define BM1880_CLK_12M_USB 53
+#define BM1880_CLK_APB_VIDEO 54
+#define BM1880_CLK_VIDEO_AXI 55
+#define BM1880_CLK_VPP_AXI 56
+#define BM1880_CLK_APB_VPP 57
+#define BM1880_CLK_DIV_0_AXI1 58
+#define BM1880_CLK_DIV_1_AXI1 59
+#define BM1880_CLK_AXI1 60
+#define BM1880_CLK_AXI2 61
+#define BM1880_CLK_AXI3 62
+#define BM1880_CLK_AXI4 63
+#define BM1880_CLK_AXI5 64
+#define BM1880_CLK_DIV_0_AXI6 65
+#define BM1880_CLK_DIV_1_AXI6 66
+#define BM1880_CLK_MUX_AXI6 67
+#define BM1880_CLK_AXI6 68
+#define BM1880_NR_CLKS 69
+
+#endif /* __DT_BINDINGS_CLOCK_BM1880_H */
--
2.17.1
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