[PATCH 2/4] mci: add device tree support for DSR

[Markus Niebel]

From: Markus Niebel <Markus.Niebel at tqs.de>

add optional DSR support. This should go into the kernel, too

Signed-off-by: Markus Niebel <Markus.Niebel at tqs.de>
---
 drivers/mci/mci-core.c |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c
index 2c91ff2..b6d7d73 100644
--- a/drivers/mci/mci-core.c
+++ b/drivers/mci/mci-core.c
@@ -1746,6 +1746,7 @@ void mci_of_parse(struct mci_host *host)
 {
 	struct device_node *np;
 	u32 bus_width;
+	u32 dsr_val;
 
 	if (!IS_ENABLED(CONFIG_OFDEVICE))
 		return;
@@ -1778,4 +1779,11 @@ void mci_of_parse(struct mci_host *host)
 
 	/* f_max is obtained from the optional "max-frequency" property */
 	of_property_read_u32(np, "max-frequency", &host->f_max);
+
+	if (!of_property_read_u32(np, "dsr", &dsr_val)) {
+		if (dsr_val < 0x10000) {
+			host->use_dsr = 1;
+			host->dsr_val = dsr_val;
+		}
+	}
 }
-- 
1.7.9.5