diff options
Diffstat (limited to 'drivers/clk/davinci')
| -rw-r--r-- | drivers/clk/davinci/Makefile | 1 | ||||
| -rw-r--r-- | drivers/clk/davinci/pll-da830.c | 70 | ||||
| -rw-r--r-- | drivers/clk/davinci/pll.c | 1 | ||||
| -rw-r--r-- | drivers/clk/davinci/pll.h | 4 |
4 files changed, 76 insertions, 0 deletions
diff --git a/drivers/clk/davinci/Makefile b/drivers/clk/davinci/Makefile index d9673bd321e0..9061e197ff1c 100644 --- a/drivers/clk/davinci/Makefile +++ b/drivers/clk/davinci/Makefile @@ -2,4 +2,5 @@ ifeq ($(CONFIG_COMMON_CLK), y) obj-y += pll.o +obj-$(CONFIG_ARCH_DAVINCI_DA830) += pll-da830.o endif diff --git a/drivers/clk/davinci/pll-da830.c b/drivers/clk/davinci/pll-da830.c new file mode 100644 index 000000000000..929a3d3a9adb --- /dev/null +++ b/drivers/clk/davinci/pll-da830.c @@ -0,0 +1,70 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * PLL clock descriptions for TI DA830/OMAP-L137/AM17XX + * + * Copyright (C) 2018 David Lechner <david@lechnology.com> + */ + +#include <linux/clkdev.h> +#include <linux/bitops.h> +#include <linux/init.h> +#include <linux/types.h> + +#include "pll.h" + +static const struct davinci_pll_clk_info da830_pll_info = { + .name = "pll0", + .pllm_mask = GENMASK(4, 0), + .pllm_min = 4, + .pllm_max = 32, + .pllout_min_rate = 300000000, + .pllout_max_rate = 600000000, + .flags = PLL_HAS_CLKMODE | PLL_HAS_PREDIV | PLL_HAS_POSTDIV, +}; + +/* + * NB: Technically, the clocks flagged as SYSCLK_FIXED_DIV are "fixed ratio", + * meaning that we could change the divider as long as we keep the correct + * ratio between all of the clocks, but we don't support that because there is + * currently not a need for it. + */ + +SYSCLK(2, pll0_sysclk2, pll0_pllen, 5, SYSCLK_FIXED_DIV); +SYSCLK(3, pll0_sysclk3, pll0_pllen, 5, 0); +SYSCLK(4, pll0_sysclk4, pll0_pllen, 5, SYSCLK_FIXED_DIV); +SYSCLK(5, pll0_sysclk5, pll0_pllen, 5, 0); +SYSCLK(6, pll0_sysclk6, pll0_pllen, 5, SYSCLK_FIXED_DIV); +SYSCLK(7, pll0_sysclk7, pll0_pllen, 5, 0); + +int da830_pll_init(struct device *dev, void __iomem *base) +{ + struct clk *clk; + + davinci_pll_clk_register(dev, &da830_pll_info, "ref_clk", base); + + clk = davinci_pll_sysclk_register(dev, &pll0_sysclk2, base); + clk_register_clkdev(clk, "pll0_sysclk2", "da830-psc0"); + clk_register_clkdev(clk, "pll0_sysclk2", "da830-psc1"); + + clk = davinci_pll_sysclk_register(dev, &pll0_sysclk3, base); + clk_register_clkdev(clk, "pll0_sysclk3", "da830-psc0"); + + clk = davinci_pll_sysclk_register(dev, &pll0_sysclk4, base); + clk_register_clkdev(clk, "pll0_sysclk4", "da830-psc0"); + clk_register_clkdev(clk, "pll0_sysclk4", "da830-psc1"); + + clk = davinci_pll_sysclk_register(dev, &pll0_sysclk5, base); + clk_register_clkdev(clk, "pll0_sysclk5", "da830-psc1"); + + clk = davinci_pll_sysclk_register(dev, &pll0_sysclk6, base); + clk_register_clkdev(clk, "pll0_sysclk6", "da830-psc0"); + + clk = davinci_pll_sysclk_register(dev, &pll0_sysclk7, base); + + clk = davinci_pll_auxclk_register(dev, "pll0_auxclk", base); + clk_register_clkdev(clk, NULL, "i2c_davinci.1"); + clk_register_clkdev(clk, "timer0", NULL); + clk_register_clkdev(clk, NULL, "davinci-wdt"); + + return 0; +} diff --git a/drivers/clk/davinci/pll.c b/drivers/clk/davinci/pll.c index bfa5b7e52d3d..d91cb9d5bc1f 100644 --- a/drivers/clk/davinci/pll.c +++ b/drivers/clk/davinci/pll.c @@ -775,6 +775,7 @@ static const struct of_device_id davinci_pll_of_match[] = { }; static const struct platform_device_id davinci_pll_id_table[] = { + { .name = "da830-pll", .driver_data = (kernel_ulong_t)da830_pll_init }, { } }; diff --git a/drivers/clk/davinci/pll.h b/drivers/clk/davinci/pll.h index 52103aeeceec..0de2c61cb135 100644 --- a/drivers/clk/davinci/pll.h +++ b/drivers/clk/davinci/pll.h @@ -117,4 +117,8 @@ int of_davinci_pll_init(struct device *dev, u8 max_sysclk_id, void __iomem *base); +/* Platform-specific callbacks */ + +int da830_pll_init(struct device *dev, void __iomem *base); + #endif /* __CLK_DAVINCI_PLL_H___ */ |