[PATCH v8 05/42] clk: davinci: Add platform information for TI DM355 PLL

David Lechner
2018-03-16T03:01:06Z

This adds platform-specific declarations for the PLL clocks on TI
DM355 based systems.

Signed-off-by: David Lechner <david@lechnology.com>
---

v8 changes:
- drop __init and __initconst attributes
- add a clkdev lookup for each SYSCLK

v7 changes:
- split registration functions for each PLL
- Add platform_device_id lookup

v6 changes:
- Added dm355_pll{1,2}_info with controller-specific information
- Add empty lines between function calls

drivers/clk/davinci/Makefile | 1 +
drivers/clk/davinci/pll-dm355.c | 79 +++++++++++++++++++++++++++++++++++++++++
drivers/clk/davinci/pll.c | 2 ++
drivers/clk/davinci/pll.h | 3 ++
4 files changed, 85 insertions(+)
create mode 100644 drivers/clk/davinci/pll-dm355.c

diff --git a/drivers/clk/davinci/Makefile b/drivers/clk/davinci/Makefile
index 13049d4..6720bd0 100644
--- a/drivers/clk/davinci/Makefile
+++ b/drivers/clk/davinci/Makefile
@@ -4,4 +4,5 @@ ifeq ($(CONFIG_COMMON_CLK), y)
obj-y += pll.o
obj-$(CONFIG_ARCH_DAVINCI_DA830) += pll-da830.o
obj-$(CONFIG_ARCH_DAVINCI_DA850) += pll-da850.o
+obj-$(CONFIG_ARCH_DAVINCI_DM355) += pll-dm355.o
endif
diff --git a/drivers/clk/davinci/pll-dm355.c b/drivers/clk/davinci/pll-dm355.c
new file mode 100644
index 0000000..5345f82
--- /dev/null
+++ b/drivers/clk/davinci/pll-dm355.c
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PLL clock descriptions for TI DM355
+ *
+ * Copyright (C) 2018 David Lechner <david@lechnology.com>
+ */
+
+#include <linux/bitops.h>
+#include <linux/clkdev.h>
+#include <linux/init.h>
+#include <linux/types.h>
+
+#include "pll.h"
+
+static const struct davinci_pll_clk_info dm355_pll1_info = {
+ .name = "pll1",
+ .pllm_mask = GENMASK(7, 0),
+ .pllm_min = 92,
+ .pllm_max = 184,
+ .flags = PLL_HAS_CLKMODE | PLL_HAS_PREDIV | PLL_PREDIV_ALWAYS_ENABLED |
+ PLL_PREDIV_FIXED8 | PLL_HAS_POSTDIV |
+ PLL_POSTDIV_ALWAYS_ENABLED | PLL_POSTDIV_FIXED_DIV,
+};
+
+SYSCLK(1, pll1_sysclk1, pll1, 5, SYSCLK_FIXED_DIV | SYSCLK_ALWAYS_ENABLED);
+SYSCLK(2, pll1_sysclk2, pll1, 5, SYSCLK_FIXED_DIV | SYSCLK_ALWAYS_ENABLED);
+SYSCLK(3, pll1_sysclk3, pll1, 5, SYSCLK_ALWAYS_ENABLED);
+SYSCLK(4, pll1_sysclk4, pll1, 5, SYSCLK_ALWAYS_ENABLED);
+
+int dm355_pll1_init(struct device *dev, void __iomem *base)
+{
+ struct clk *clk;
+
+ davinci_pll_clk_register(dev, &dm355_pll1_info, "ref_clk", base);
+
+ clk = davinci_pll_sysclk_register(dev, &pll1_sysclk1, base);
+ clk_register_clkdev(clk, "pll1_sysclk1", "dm355-psc");
+
+ clk = davinci_pll_sysclk_register(dev, &pll1_sysclk2, base);
+ clk_register_clkdev(clk, "pll1_sysclk2", "dm355-psc");
+
+ clk = davinci_pll_sysclk_register(dev, &pll1_sysclk3, base);
+ clk_register_clkdev(clk, "pll1_sysclk3", "dm355-psc");
+
+ clk = davinci_pll_sysclk_register(dev, &pll1_sysclk4, base);
+ clk_register_clkdev(clk, "pll1_sysclk4", "dm355-psc");
+
+ clk = davinci_pll_auxclk_register(dev, "pll1_auxclk", base);
+ clk_register_clkdev(clk, "pll1_auxclk", "dm355-psc");
+
+ davinci_pll_sysclkbp_clk_register(dev, "pll1_sysclkbp", base);
+
+ return 0;
+}
+
+static const struct davinci_pll_clk_info dm355_pll2_info = {
+ .name = "pll2",
+ .pllm_mask = GENMASK(7, 0),
+ .pllm_min = 92,
+ .pllm_max = 184,
+ .flags = PLL_HAS_PREDIV | PLL_PREDIV_ALWAYS_ENABLED | PLL_HAS_POSTDIV |
+ PLL_POSTDIV_ALWAYS_ENABLED | PLL_POSTDIV_FIXED_DIV,
+};
+
+SYSCLK(1, pll2_sysclk1, pll2, 5, SYSCLK_FIXED_DIV);
+SYSCLK(2, pll2_sysclk2, pll2, 5, SYSCLK_FIXED_DIV | SYSCLK_ALWAYS_ENABLED);
+
+int dm355_pll2_init(struct device *dev, void __iomem *base)
+{
+ davinci_pll_clk_register(dev, &dm355_pll2_info, "oscin", base);
+
+ davinci_pll_sysclk_register(dev, &pll2_sysclk1, base);
+
+ davinci_pll_sysclk_register(dev, &pll2_sysclk2, 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 535f725..305d2e9 100644
--- a/drivers/clk/davinci/pll.c
+++ b/drivers/clk/davinci/pll.c
@@ -780,6 +780,8 @@ static const struct platform_device_id davinci_pll_id_table[] = {
{ .name = "da830-pll", .driver_data = (kernel_ulong_t)da830_pll_init },
{ .name = "da850-pll0", .driver_data = (kernel_ulong_t)da850_pll0_init },
{ .name = "da850-pll1", .driver_data = (kernel_ulong_t)da850_pll1_init },
+ { .name = "dm355-pll1", .driver_data = (kernel_ulong_t)dm355_pll1_init },
+ { .name = "dm355-pll2", .driver_data = (kernel_ulong_t)dm355_pll2_init },
{ }
};

diff --git a/drivers/clk/davinci/pll.h b/drivers/clk/davinci/pll.h
index 53b8d51..d90d308 100644
--- a/drivers/clk/davinci/pll.h
+++ b/drivers/clk/davinci/pll.h
@@ -126,4 +126,7 @@ int da850_pll1_init(struct device *dev, void __iomem *base);
int of_da850_pll0_init(struct device *dev, void __iomem *base);
int of_da850_pll1_init(struct device *dev, void __iomem *base);

+int dm355_pll1_init(struct device *dev, void __iomem *base);
+int dm355_pll2_init(struct device *dev, void __iomem *base);
+
#endif /* __CLK_DAVINCI_PLL_H___ */
--
2.7.4