On Tue, May 08, 2018 at 11:19:24AM +0800, Ley Foon Tan wrote:
Add code to reset all reset signals as in mmc DT node. A reset property is an optional feature, so only print out a warning and do not fail if a reset property is not present.
If a reset property is discovered, then use it to deassert, thus bringing the IP out of reset.
Signed-off-by: Ley Foon Tan ley.foon.tan@intel.com Reviewed-by: Simon Glass sjg@chromium.org
drivers/mmc/socfpga_dw_mmc.c | 17 +++++++++++++++++ 1 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/socfpga_dw_mmc.c b/drivers/mmc/socfpga_dw_mmc.c index fa0e449..eb7e64e 100644 --- a/drivers/mmc/socfpga_dw_mmc.c +++ b/drivers/mmc/socfpga_dw_mmc.c @@ -13,6 +13,7 @@ #include <linux/libfdt.h> #include <linux/err.h> #include <malloc.h> +#include <reset.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -33,6 +34,20 @@ struct dwmci_socfpga_priv_data { unsigned int smplsel; };
+static void socfpga_dwmci_reset(struct udevice *dev) +{
- struct reset_ctl_bulk reset_bulk;
- int ret;
- ret = reset_get_bulk(dev, &reset_bulk);
- if (ret) {
dev_warn(dev, "Can't get reset: %d\n", ret);return;- }
- reset_deassert_bulk(&reset_bulk);
+}
The driver doesn't depend on DM_RESET and this code hunk doesn't either so it fails to build on a number of platforms. This type of comment applies to the whole series, and may be fixed differently in different cases (it might be OK to enforce DM_RESET for this driver, but not for the ns16550 driver).