From f11668fee725f59ab13e40f58f46ab7e65205457 Mon Sep 17 00:00:00 2001 From: Markus Niebel Date: Tue, 14 Jan 2014 09:23:35 +0100 Subject: mci: add device tree support for DSR add optional DSR support. This should go into the kernel, too Signed-off-by: Markus Niebel Signed-off-by: Sascha Hauer --- drivers/mci/mci-core.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/mci') diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c index 12611090ff..cf38a88a9b 100644 --- a/drivers/mci/mci-core.c +++ b/drivers/mci/mci-core.c @@ -1775,6 +1775,7 @@ void mci_of_parse(struct mci_host *host) { struct device_node *np; u32 bus_width; + u32 dsr_val; if (!IS_ENABLED(CONFIG_OFDEVICE)) return; @@ -1807,4 +1808,11 @@ 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; + } + } } -- cgit v1.2.3