wl1271: Configure clock-request drive mode to open-drain

This patch configures the wl1271 chipset clock-request line to be
driver in open-drain mode instead of push-pull.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_boot.c b/drivers/net/wireless/wl12xx/wl1271_boot.c
index 41c6affbee29..4195298b5abc 100644
--- a/drivers/net/wireless/wl12xx/wl1271_boot.c
+++ b/drivers/net/wireless/wl12xx/wl1271_boot.c
@@ -451,11 +451,15 @@ int wl1271_boot(struct wl1271 *wl)
 
         if (REF_CLOCK != 0) {
                 u16 val;
-                /* Set clock type */
+                /* Set clock type (open drain) */
                 val = wl1271_top_reg_read(wl, OCP_REG_CLK_TYPE);
                 val &= FREF_CLK_TYPE_BITS;
-                val |= CLK_REQ_PRCM;
                 wl1271_top_reg_write(wl, OCP_REG_CLK_TYPE, val);
+
+                /* Set clock pull mode (no pull) */
+                val = wl1271_top_reg_read(wl, OCP_REG_CLK_PULL);
+                val |= NO_PULL;
+                wl1271_top_reg_write(wl, OCP_REG_CLK_PULL, val);
         } else {
                 u16 val;
                 /* Set clock polarity */