Thread (50 messages) 50 messages, 4 authors, 2018-05-04

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

From: Sekhar Nori <hidden>
Date: 2018-05-01 13:47:26
Also in: linux-clk, linux-devicetree, lkml

On Friday 27 April 2018 05:47 AM, David Lechner wrote:
quoted hunk ↗ jump to hunk
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;
+	}
Is this error handling for cfgchip needed here considering
davinci_pll_clk_register() already checks and warns.

Thanks,
Sekhar
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