[PATCH v7 07/42] clk: davinci: Add platform information for TI DM644x PLL
From: david@lechnology.com (David Lechner)
Date: 2018-02-19 20:22:52
Also in:
linux-clk, linux-devicetree, lkml
Subsystem:
common clk framework, the rest, ti davinci series clock driver · Maintainers:
Michael Turquette, Stephen Boyd, Linus Torvalds, David Lechner
This adds platform-specific declarations for the PLL clocks on TI
DM644x based systems.
Signed-off-by: David Lechner <david@lechnology.com>
---
v7 changes:
- split registration functions for each PLL
- Add platform_device_id lookup
v6 changes:
- Added dm644x_pll{1,2}_info with controller-specific information
- Add empty lines between function calls
drivers/clk/davinci/Makefile | 1 +
drivers/clk/davinci/pll-dm644x.c | 76 ++++++++++++++++++++++++++++++++++++++++
drivers/clk/davinci/pll.c | 2 ++
drivers/clk/davinci/pll.h | 3 ++
4 files changed, 82 insertions(+)
create mode 100644 drivers/clk/davinci/pll-dm644x.c
diff --git a/drivers/clk/davinci/Makefile b/drivers/clk/davinci/Makefile
index 353aa02..59d8ab6 100644
--- a/drivers/clk/davinci/Makefile
+++ b/drivers/clk/davinci/Makefile@@ -6,4 +6,5 @@ obj-$(CONFIG_ARCH_DAVINCI_DA830) += pll-da830.o obj-$(CONFIG_ARCH_DAVINCI_DA850) += pll-da850.o obj-$(CONFIG_ARCH_DAVINCI_DM355) += pll-dm355.o obj-$(CONFIG_ARCH_DAVINCI_DM365) += pll-dm365.o +obj-$(CONFIG_ARCH_DAVINCI_DM644x) += pll-dm644x.o endif
diff --git a/drivers/clk/davinci/pll-dm644x.c b/drivers/clk/davinci/pll-dm644x.c
new file mode 100644
index 0000000..cb31aa0
--- /dev/null
+++ b/drivers/clk/davinci/pll-dm644x.c@@ -0,0 +1,76 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * PLL clock descriptions for TI DM644X + * + * Copyright (C) 2018 David Lechner <david@lechnology.com> + */ + +#include <linux/bitops.h> +#include <linux/init.h> +#include <linux/types.h> + +#include "pll.h" + +static const struct davinci_pll_clk_info dm644x_pll1_info __initconst = { + .name = "pll1", + .pllm_mask = GENMASK(4, 0), + .pllm_min = 1, + .pllm_max = 32, + .pllout_min_rate = 400000000, + .pllout_max_rate = 600000000, /* 810MHz @ 1.3V, -810 only */ + .flags = PLL_HAS_CLKMODE | PLL_HAS_POSTDIV, +}; + +static const struct davinci_pll_sysclk_info dm644x_pll1_sysclk_info[] __initconst = { + SYSCLK(1, pll1_sysclk1, pll1_pllen, 4, SYSCLK_FIXED_DIV), + SYSCLK(2, pll1_sysclk2, pll1_pllen, 4, SYSCLK_FIXED_DIV), + SYSCLK(3, pll1_sysclk3, pll1_pllen, 4, SYSCLK_FIXED_DIV), + SYSCLK(5, pll1_sysclk5, pll1_pllen, 4, SYSCLK_FIXED_DIV), + { } +}; + +static const struct davinci_pll_clk_info dm644x_pll2_info __initconst = { + .name = "pll2", + .pllm_mask = GENMASK(4, 0), + .pllm_min = 1, + .pllm_max = 32, + .pllout_min_rate = 400000000, + .pllout_max_rate = 900000000, + .flags = PLL_HAS_POSTDIV | PLL_POSTDIV_FIXED_DIV, +}; + +static const struct davinci_pll_sysclk_info dm644x_pll2_sysclk_info[] __initconst = { + SYSCLK(1, pll2_sysclk1, pll2_pllen, 4, 0), + SYSCLK(2, pll2_sysclk2, pll2_pllen, 4, 0), + { } +}; + +int __init dm644x_pll1_init(struct device *dev, void __iomem *base) +{ + const struct davinci_pll_sysclk_info *info; + + davinci_pll_clk_register(dev, &dm644x_pll1_info, "ref_clk", base); + + for (info = dm644x_pll1_sysclk_info; info->name; info++) + davinci_pll_sysclk_register(dev, info, base); + + davinci_pll_auxclk_register(dev, "pll1_auxclk", base); + + davinci_pll_sysclkbp_clk_register(dev, "pll1_sysclkbp", base); + + return 0; +} + +int __init dm644x_pll2_init(struct device *dev, void __iomem *base) +{ + const struct davinci_pll_sysclk_info *info; + + davinci_pll_clk_register(dev, &dm644x_pll2_info, "oscin", base); + + for (info = dm644x_pll2_sysclk_info; info->name; info++) + davinci_pll_sysclk_register(dev, info, base); + + davinci_pll_sysclkbp_clk_register(dev, "pll2_sysclkbp", base); + + return 0; +}
diff --git a/drivers/clk/davinci/pll.c b/drivers/clk/davinci/pll.c
index c8dd3fa..613ec24 100644
--- a/drivers/clk/davinci/pll.c
+++ b/drivers/clk/davinci/pll.c@@ -760,6 +760,8 @@ static const struct platform_device_id davinci_pll_id_table[] = { { .name = "dm355-pll2", .driver_data = (kernel_ulong_t)dm355_pll2_init }, { .name = "dm365-pll1", .driver_data = (kernel_ulong_t)dm365_pll1_init }, { .name = "dm365-pll2", .driver_data = (kernel_ulong_t)dm365_pll2_init }, + { .name = "dm644x-pll1", .driver_data = (kernel_ulong_t)dm644x_pll1_init }, + { .name = "dm644x-pll2", .driver_data = (kernel_ulong_t)dm644x_pll2_init }, { } };
diff --git a/drivers/clk/davinci/pll.h b/drivers/clk/davinci/pll.h
index b911c8a..df977a6 100644
--- a/drivers/clk/davinci/pll.h
+++ b/drivers/clk/davinci/pll.h@@ -132,4 +132,7 @@ int dm355_pll2_init(struct device *dev, void __iomem *base); int dm365_pll1_init(struct device *dev, void __iomem *base); int dm365_pll2_init(struct device *dev, void __iomem *base); +int dm644x_pll1_init(struct device *dev, void __iomem *base); +int dm644x_pll2_init(struct device *dev, void __iomem *base); + #endif /* __CLK_DAVINCI_PLL_H___ */
--
2.7.4