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authorRajeshwari Shinde <rajeshwari.s@samsung.com>2013-01-08 21:03:40 +0000
committerMinkyu Kang <mk7.kang@samsung.com>2013-01-10 10:12:50 +0900
commit4050f0700f1822e6cb0095128192c15be5e750ee (patch)
tree8d749f4e6fc3e759f63eee98c28f25632d5c943b
parente00be0d30b40e83056de1e1bef245484d7d5b93e (diff)
downloadu-boot-linaro-stable-4050f0700f1822e6cb0095128192c15be5e750ee.tar.gz
PMIC: MAX77686: Add FDT Support
This patch adds fdt support to MAX77686. Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
-rw-r--r--drivers/power/pmic/pmic_max77686.c37
1 files changed, 34 insertions, 3 deletions
diff --git a/drivers/power/pmic/pmic_max77686.c b/drivers/power/pmic/pmic_max77686.c
index fce0183af..7fcb4c0be 100644
--- a/drivers/power/pmic/pmic_max77686.c
+++ b/drivers/power/pmic/pmic_max77686.c
@@ -22,10 +22,14 @@
*/
#include <common.h>
+#include <fdtdec.h>
+#include <i2c.h>
#include <power/pmic.h>
#include <power/max77686_pmic.h>
#include <errno.h>
+DECLARE_GLOBAL_DATA_PTR;
+
int pmic_init(unsigned char bus)
{
static const char name[] = "MAX77686_PMIC";
@@ -36,13 +40,40 @@ int pmic_init(unsigned char bus)
return -ENOMEM;
}
- puts("Board PMIC init\n");
+#ifdef CONFIG_OF_CONTROL
+ const void *blob = gd->fdt_blob;
+ int node, parent;
+
+ node = fdtdec_next_compatible(blob, 0, COMPAT_MAXIM_MAX77686_PMIC);
+ if (node < 0) {
+ debug("PMIC: No node for PMIC Chip in device tree\n");
+ debug("node = %d\n", node);
+ return -1;
+ }
+
+ parent = fdt_parent_offset(blob, node);
+ if (parent < 0) {
+ debug("%s: Cannot find node parent\n", __func__);
+ return -1;
+ }
+
+ p->bus = i2c_get_bus_num_fdt(parent);
+ if (p->bus < 0) {
+ debug("%s: Cannot find I2C bus\n", __func__);
+ return -1;
+ }
+ p->hw.i2c.addr = fdtdec_get_int(blob, node, "reg", 9);
+#else
+ p->bus = bus;
+ p->hw.i2c.addr = MAX77686_I2C_ADDR;
+#endif
+
p->name = name;
p->interface = PMIC_I2C;
p->number_of_regs = PMIC_NUM_OF_REGS;
- p->hw.i2c.addr = MAX77686_I2C_ADDR;
p->hw.i2c.tx_num = 1;
- p->bus = bus;
+
+ puts("Board PMIC init\n");
return 0;
}