diff options
Diffstat (limited to 'arch/sandbox')
| -rw-r--r-- | arch/sandbox/dts/test.dts | 17 | ||||
| -rw-r--r-- | arch/sandbox/include/asm/clk.h | 111 | ||||
| -rw-r--r-- | arch/sandbox/include/asm/test.h | 9 |
3 files changed, 127 insertions, 10 deletions
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index 879b30e3cc..9e46f9e815 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -108,8 +108,23 @@ compatible = "denx,u-boot-fdt-test"; }; - clk@0 { + clk_fixed: clk-fixed { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <1234>; + }; + + clk_sandbox: clk-sbox { compatible = "sandbox,clk"; + #clock-cells = <1>; + }; + + clk-test { + compatible = "sandbox,clk-test"; + clocks = <&clk_fixed>, + <&clk_sandbox 1>, + <&clk_sandbox 0>; + clock-names = "fixed", "i2c", "spi"; }; eth@10002000 { diff --git a/arch/sandbox/include/asm/clk.h b/arch/sandbox/include/asm/clk.h new file mode 100644 index 0000000000..9dc6c8184b --- /dev/null +++ b/arch/sandbox/include/asm/clk.h @@ -0,0 +1,111 @@ +/* + * Copyright (c) 2016, NVIDIA CORPORATION. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#ifndef __SANDBOX_CLK_H +#define __SANDBOX_CLK_H + +#include <common.h> + +struct udevice; + +/** + * enum sandbox_clk_id - Identity of clocks implemented by the sandbox clock + * provider. + * + * These IDs are within/relative-to the clock provider. + */ +enum sandbox_clk_id { + SANDBOX_CLK_ID_SPI, + SANDBOX_CLK_ID_I2C, + + SANDBOX_CLK_ID_COUNT, +}; + +/** + * enum sandbox_clk_test_id - Identity of the clocks consumed by the sandbox + * clock test device. + * + * These are the IDs the clock consumer knows the clocks as. + */ +enum sandbox_clk_test_id { + SANDBOX_CLK_TEST_ID_FIXED, + SANDBOX_CLK_TEST_ID_SPI, + SANDBOX_CLK_TEST_ID_I2C, + + SANDBOX_CLK_TEST_ID_COUNT, +}; + +/** + * sandbox_clk_query_rate - Query the current rate of a sandbox clock. + * + * @dev: The sandbox clock provider device. + * @id: The clock to query. + * @return: The rate of the clock. + */ +ulong sandbox_clk_query_rate(struct udevice *dev, int id); +/** + * sandbox_clk_query_enable - Query the enable state of a sandbox clock. + * + * @dev: The sandbox clock provider device. + * @id: The clock to query. + * @return: The rate of the clock. + */ +int sandbox_clk_query_enable(struct udevice *dev, int id); + +/** + * sandbox_clk_test_get - Ask the sandbox clock test device to request its + * clocks. + * + * @dev: The sandbox clock test (client) devivce. + * @return: 0 if OK, or a negative error code. + */ +int sandbox_clk_test_get(struct udevice *dev); +/** + * sandbox_clk_test_get_rate - Ask the sandbox clock test device to query a + * clock's rate. + * + * @dev: The sandbox clock test (client) devivce. + * @id: The test device's clock ID to query. + * @return: The rate of the clock. + */ +ulong sandbox_clk_test_get_rate(struct udevice *dev, int id); +/** + * sandbox_clk_test_set_rate - Ask the sandbox clock test device to set a + * clock's rate. + * + * @dev: The sandbox clock test (client) devivce. + * @id: The test device's clock ID to configure. + * @return: The new rate of the clock. + */ +ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate); +/** + * sandbox_clk_test_enable - Ask the sandbox clock test device to enable a + * clock. + * + * @dev: The sandbox clock test (client) devivce. + * @id: The test device's clock ID to configure. + * @return: 0 if OK, or a negative error code. + */ +int sandbox_clk_test_enable(struct udevice *dev, int id); +/** + * sandbox_clk_test_disable - Ask the sandbox clock test device to disable a + * clock. + * + * @dev: The sandbox clock test (client) devivce. + * @id: The test device's clock ID to configure. + * @return: 0 if OK, or a negative error code. + */ +int sandbox_clk_test_disable(struct udevice *dev, int id); +/** + * sandbox_clk_test_free - Ask the sandbox clock test device to free its + * clocks. + * + * @dev: The sandbox clock test (client) devivce. + * @return: 0 if OK, or a negative error code. + */ +int sandbox_clk_test_free(struct udevice *dev); + +#endif diff --git a/arch/sandbox/include/asm/test.h b/arch/sandbox/include/asm/test.h index 224b0ebaf9..451a78e590 100644 --- a/arch/sandbox/include/asm/test.h +++ b/arch/sandbox/include/asm/test.h @@ -19,15 +19,6 @@ #define SANDBOX_CLK_RATE 32768 -enum { - PERIPH_ID_FIRST = 0, - PERIPH_ID_SPI = PERIPH_ID_FIRST, - PERIPH_ID_I2C, - PERIPH_ID_PCI, - - PERIPH_ID_COUNT, -}; - /* System controller driver data */ enum { SYSCON0 = 32, |