gpio: stmpe: Add DT support for stmpe gpio

This patch allows the STMPE GPIO driver to be successfully probed and
initialised when Device Tree support is enabled. Bindings are mentioned in
Documentation too.

Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c
index c94f521f392c..79e88d1fd99a 100644
--- a/drivers/mfd/stmpe.c
+++ b/drivers/mfd/stmpe.c
@@ -294,12 +294,14 @@ static struct resource stmpe_gpio_resources[] = {
 
 static struct mfd_cell stmpe_gpio_cell = {
         .name           = "stmpe-gpio",
+        .of_compatible  = "st,stmpe-gpio",
         .resources      = stmpe_gpio_resources,
         .num_resources  = ARRAY_SIZE(stmpe_gpio_resources),
 };
 
 static struct mfd_cell stmpe_gpio_cell_noirq = {
         .name           = "stmpe-gpio",
+        .of_compatible  = "st,stmpe-gpio",
         /* gpio cell resources consist of an irq only so no resources here */
 };