diff options
Diffstat (limited to 'target/linux/lantiq/patches-3.8/0014-PINCTRL-lantiq-fix-pin-availability-check.patch')
| -rw-r--r-- | target/linux/lantiq/patches-3.8/0014-PINCTRL-lantiq-fix-pin-availability-check.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.8/0014-PINCTRL-lantiq-fix-pin-availability-check.patch b/target/linux/lantiq/patches-3.8/0014-PINCTRL-lantiq-fix-pin-availability-check.patch new file mode 100644 index 0000000000..d1d2ff28db --- /dev/null +++ b/target/linux/lantiq/patches-3.8/0014-PINCTRL-lantiq-fix-pin-availability-check.patch @@ -0,0 +1,43 @@ +From 51d5029bd9cd0ff85e1df87a4df57e544c52dc34 Mon Sep 17 00:00:00 2001 +From: John Crispin <blogic@openwrt.org> +Date: Wed, 30 Jan 2013 20:16:22 +0100 +Subject: [PATCH 14/40] PINCTRL: lantiq: fix pin availability check + +The clock needs to be activated for the check to work. In order to be compatible +with future silicon make sure that at least 1 pin is available before probing +the pad controller. + +Signed-off-by: Thomas Langer <thomas.langer@lantiq.com> +Signed-off-by: John Crispin <blogic@openwrt.org> +--- + drivers/pinctrl/pinctrl-falcon.c | 11 ++++++++--- + 1 file changed, 8 insertions(+), 3 deletions(-) + +diff --git a/drivers/pinctrl/pinctrl-falcon.c b/drivers/pinctrl/pinctrl-falcon.c +index 4a0d54a..de9d1db 100644 +--- a/drivers/pinctrl/pinctrl-falcon.c ++++ b/drivers/pinctrl/pinctrl-falcon.c +@@ -455,12 +455,17 @@ static int pinctrl_falcon_probe(struct platform_device *pdev) + *bank); + return -ENOMEM; + } ++ clk_activate(falcon_info.clk[*bank]); + avail = pad_r32(falcon_info.membase[*bank], + LTQ_PADC_AVAIL); + pins = fls(avail); +- lantiq_load_pin_desc(&falcon_pads[pad_count], *bank, pins); +- pad_count += pins; +- clk_enable(falcon_info.clk[*bank]); ++ if (pins) { ++ lantiq_load_pin_desc(&falcon_pads[pad_count], ++ *bank, pins); ++ pad_count += pins; ++ } else { ++ clk_deactivate(falcon_info.clk[*bank]); ++ } + dev_dbg(&pdev->dev, "found %s with %d pads\n", + res.name, pins); + } +-- +1.7.10.4 + |