From 6664a0e5f3694592966c92ec4a0547ad77b84a9a Mon Sep 17 00:00:00 2001
From: Baruch Siach <baruch@tkos.co.il>
Date: Sun, 3 Feb 2019 15:15:39 +0200
Subject: [PATCH] pcie: designware: mvebu: fix reset release polarity
The dm_gpio_set_value() routine sets signal logical level, with
GPIO_ACTIVE_LOW/HIGH value taken into account. Reset active value is 1
(asserted), while reset inactive value is 0 (de-asserted). Fix the reset
toggle code to set the correct reset logic value.
Reported-by: Sven Auhagen <sven.auhagen@voleatech.de>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
---
drivers/pci/pcie_dw_mvebu.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/pcie_dw_mvebu.c b/drivers/pci/pcie_dw_mvebu.c
index 8081005c27..95fb41966f 100644
--- a/drivers/pci/pcie_dw_mvebu.c
+++ b/drivers/pci/pcie_dw_mvebu.c
@@ -489,7 +489,9 @@ static int pcie_dw_mvebu_probe(struct udevice *dev)
* using this GPIO.
*/
if (dm_gpio_is_valid(&reset_gpio)) {
- dm_gpio_set_value(&reset_gpio, 1);
+ dm_gpio_set_value(&reset_gpio, 1); /* assert */
+ mdelay(200);
+ dm_gpio_set_value(&reset_gpio, 0); /* de-assert */
mdelay(200);
}
#else
--
2.39.5