[PATCH 2/4] i2c: sun6i_p2wi: Add support for DM clocks and resets

Samuel Holland samuel at sholland.org
Fri Mar 18 05:52:34 CET 2022


Currently, clock/reset setup for this device is handled by a
platform-specific function and is intermixed with non-DM pinctrl
setup. Use the devicetree to get clocks/resets, which disentagles
it from the pinctrl setup in preparation for moving to DM_PINCTRL.

Signed-off-by: Samuel Holland <samuel at sholland.org>
---

 drivers/i2c/sun6i_p2wi.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/i2c/sun6i_p2wi.c b/drivers/i2c/sun6i_p2wi.c
index da7f540509..087c682a50 100644
--- a/drivers/i2c/sun6i_p2wi.c
+++ b/drivers/i2c/sun6i_p2wi.c
@@ -14,10 +14,12 @@
  */
 
 #include <axp_pmic.h>
+#include <clk.h>
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
 #include <i2c.h>
+#include <reset.h>
 #include <time.h>
 #include <asm/io.h>
 #include <asm/arch/cpu.h>
@@ -180,9 +182,19 @@ static int sun6i_p2wi_probe_chip(struct udevice *bus, uint chip_addr,
 static int sun6i_p2wi_probe(struct udevice *bus)
 {
 	struct sun6i_p2wi_priv *priv = dev_get_priv(bus);
+	struct reset_ctl *reset;
+	struct clk *clk;
 
 	priv->base = dev_read_addr_ptr(bus);
 
+	reset = devm_reset_control_get(bus, NULL);
+	if (!IS_ERR(reset))
+		reset_deassert(reset);
+
+	clk = devm_clk_get(bus, NULL);
+	if (!IS_ERR(clk))
+		clk_enable(clk);
+
 	sun6i_p2wi_init(priv->base);
 
 	return 0;
-- 
2.33.1



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