[PATCH v9 02/27] clk: davinci: da850-pll: change PLL0 to CLK_OF_DECLARE

David Lechner
2018-04-27T00:17:20Z

PLL0 on davinci/da850-type device needs to be registered early in boot
because it is needed for clocksource/clockevent. Change the driver
to use CLK_OF_DECLARE for this special case.

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

v9 changes:
- new patch in v9

drivers/clk/davinci/pll-da850.c | 26 ++++++++++++++++++++++----
drivers/clk/davinci/pll.c | 4 +++-
drivers/clk/davinci/pll.h | 2 +-
3 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/drivers/clk/davinci/pll-da850.c b/drivers/clk/davinci/pll-da850.c
index 00a6ece7b524..743527de1da2 100644
--- a/drivers/clk/davinci/pll-da850.c
+++ b/drivers/clk/davinci/pll-da850.c
@@ -12,6 +12,8 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/mfd/da8xx-cfgchip.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_address.h>
#include <linux/of.h>
#include <linux/types.h>

@@ -135,11 +137,27 @@ static const struct davinci_pll_sysclk_info *da850_pll0_sysclk_info[] = {
NULL
};

-int of_da850_pll0_init(struct device *dev, void __iomem *base, struct regmap *cfgchip)
+void of_da850_pll0_init(struct device_node *node)
{
- return of_davinci_pll_init(dev, dev->of_node, &da850_pll0_info,
- &da850_pll0_obsclk_info,
- da850_pll0_sysclk_info, 7, base, cfgchip);
+ void __iomem *base;
+ struct regmap *cfgchip;
+
+ base = of_iomap(node, 0);
+ if (!base) {
+ pr_err("%s: ioremap failed\n", __func__);
+ return;
+ }
+
+ cfgchip = syscon_regmap_lookup_by_compatible("ti,da830-cfgchip");
+ if (IS_ERR(cfgchip)) {
+ pr_warn("%s: failed to get cfgchip (%ld)\n", __func__,
+ PTR_ERR(cfgchip));
+ cfgchip = NULL;
+ }
+
+ of_davinci_pll_init(NULL, node, &da850_pll0_info,
+ &da850_pll0_obsclk_info,
+ da850_pll0_sysclk_info, 7, base, cfgchip);
}

static const struct davinci_pll_clk_info da850_pll1_info = {
diff --git a/drivers/clk/davinci/pll.c b/drivers/clk/davinci/pll.c
index 7c4d808b8fdb..7d55e7470005 100644
--- a/drivers/clk/davinci/pll.c
+++ b/drivers/clk/davinci/pll.c
@@ -794,8 +794,10 @@ static struct davinci_pll_platform_data *davinci_pll_get_pdata(struct device *de
return pdata;
}

+/* needed in early boot for clocksource/clockevent */
+CLK_OF_DECLARE(da850_pll0, "ti,da850-pll0", of_da850_pll0_init);
+
static const struct of_device_id davinci_pll_of_match[] = {
- { .compatible = "ti,da850-pll0", .data = of_da850_pll0_init },
{ .compatible = "ti,da850-pll1", .data = of_da850_pll1_init },
{ }
};
diff --git a/drivers/clk/davinci/pll.h b/drivers/clk/davinci/pll.h
index 92a0978a7d29..5fe59ca45638 100644
--- a/drivers/clk/davinci/pll.h
+++ b/drivers/clk/davinci/pll.h
@@ -126,7 +126,7 @@ int da830_pll_init(struct device *dev, void __iomem *base, struct regmap *cfgchi

int da850_pll0_init(struct device *dev, void __iomem *base, struct regmap *cfgchip);
int da850_pll1_init(struct device *dev, void __iomem *base, struct regmap *cfgchip);
-int of_da850_pll0_init(struct device *dev, void __iomem *base, struct regmap *cfgchip);
+void of_da850_pll0_init(struct device_node *node);
int of_da850_pll1_init(struct device *dev, void __iomem *base, struct regmap *cfgchip);

int dm355_pll1_init(struct device *dev, void __iomem *base, struct regmap *cfgchip);
--
2.17.0