From: Samuel Holland <samuel@sholland.org>
Date: Fri, 18 Mar 2022 04:52:34 +0000 (-0500)
Subject: i2c: sun6i_p2wi: Add support for DM clocks and resets
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=07c411346cb2493e4f59a8affbd35f5efc2ec736;p=u-boot.git

i2c: sun6i_p2wi: Add support for DM clocks and resets

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@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---

diff --git a/drivers/i2c/sun6i_p2wi.c b/drivers/i2c/sun6i_p2wi.c
index 064d82a6d1..d221323295 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;