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authorHoratiu Vultur <horatiu.vultur@microchip.com>2021-10-18 10:57:54 +0200
committerLinus Walleij <linus.walleij@linaro.org>2021-10-24 23:03:26 +0200
commit0b90315af7602aeb40fe7b6255ab212a19dbd78e (patch)
tree17518f98456a9f205ac7dfe9c9d524899c4fa915 /drivers/pinctrl
parent8a097ff4b832e93cd9490f67b39a8a5a4e82e539 (diff)
pinctrl: microchip sgpio: use reset driver
On lan966x platform when the switch gets reseted then also the sgpio gets reseted. The fix for this is to extend also the sgpio driver to call the reset driver which will be reseted only once by the first driver that is probed. Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Reviewed-by: Steen Hegelund <steen.hegelund@microchip.com> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://lore.kernel.org/r/20211018085754.1066056-3-horatiu.vultur@microchip.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/pinctrl-microchip-sgpio.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-microchip-sgpio.c b/drivers/pinctrl/pinctrl-microchip-sgpio.c
index 072bccdea2a5..78765faa245a 100644
--- a/drivers/pinctrl/pinctrl-microchip-sgpio.c
+++ b/drivers/pinctrl/pinctrl-microchip-sgpio.c
@@ -17,6 +17,7 @@
#include <linux/pinctrl/pinmux.h>
#include <linux/platform_device.h>
#include <linux/property.h>
+#include <linux/reset.h>
#include "core.h"
#include "pinconf.h"
@@ -803,6 +804,7 @@ static int microchip_sgpio_probe(struct platform_device *pdev)
int div_clock = 0, ret, port, i, nbanks;
struct device *dev = &pdev->dev;
struct fwnode_handle *fwnode;
+ struct reset_control *reset;
struct sgpio_priv *priv;
struct clk *clk;
u32 val;
@@ -813,6 +815,11 @@ static int microchip_sgpio_probe(struct platform_device *pdev)
priv->dev = dev;
+ reset = devm_reset_control_get_optional_shared(&pdev->dev, "switch");
+ if (IS_ERR(reset))
+ return dev_err_probe(dev, PTR_ERR(reset), "Failed to get reset\n");
+ reset_control_reset(reset);
+
clk = devm_clk_get(dev, NULL);
if (IS_ERR(clk))
return dev_err_probe(dev, PTR_ERR(clk), "Failed to get clock\n");