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clk: davinci: da850-pll: change PLL0 to CLK_OF_DECLARE

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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.

Reviewed-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20180525181150.17873-8-david@lechnology.com
This commit is contained in:
David Lechner 2018-05-25 13:11:48 -05:00 committed by Michael Turquette
parent 76c9dd9dbd
commit 17d8bacf19
3 changed files with 21 additions and 6 deletions
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17
drivers/clk/davinci/pll-da850.c
View File

@ -13,6 +13,8 @@
#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>
@ -136,9 +138,20 @@ 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,
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");
of_davinci_pll_init(NULL, node, &da850_pll0_info,
&da850_pll0_obsclk_info,
da850_pll0_sysclk_info, 7, base, cfgchip);
}

4
drivers/clk/davinci/pll.c
View File

@ -859,8 +859,10 @@ 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 },
{ }
};

2
drivers/clk/davinci/pll.h
View File

@ -123,7 +123,7 @@ int of_davinci_pll_init(struct device *dev, struct device_node *node,
/* Platform-specific callbacks */
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_pll2_init(struct device *dev, void __iomem *base, struct regmap *cfgchip);