clk: davinci: Add platform information for TI DA830 PLL

This adds platform-specific declarations for the PLL clocks on TI DA830/
OMAP-L137/AM17XX SoCs.

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/davinci/Makefile b/drivers/clk/davinci/Makefile
index d9673bd321e0473ec0fb8a81fe16cc7a4fc91c20..9061e197ff1c2b6e4ad31f882ddf4386dc20ffef 100644 (file)
--- 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 (file)
index 0000000..929a3d3
--- /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 bfa5b7e52d3d1d5be34b359d0886125ce5243fe7..d91cb9d5bc1f6d916eff04d3482c73a43a0337ed 100644 (file)
--- 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 52103aeeceecd4ee763adfa403896173cbd61050..0de2c61cb135fb6443ebb0a6097b375554b9401c 100644 (file)
--- 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___ */