[PATCH] mailbox: stm32_ipcc: Convert to use APIs which support live DT

[Patrick Delaunay]

Use ofnode_ or dev_ APIs instead of fdt_ and fdtdec_ APIs so that the
driver can support live DT.

Signed-off-by: Patrick Delaunay <patrick.delau...@st.com>
---

 drivers/mailbox/stm32-ipcc.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/mailbox/stm32-ipcc.c b/drivers/mailbox/stm32-ipcc.c
index b8bf356b4a..81a4115986 100644
--- a/drivers/mailbox/stm32-ipcc.c
+++ b/drivers/mailbox/stm32-ipcc.c
@@ -101,9 +101,8 @@ static int stm32_ipcc_probe(struct udevice *dev)
 {
        struct stm32_ipcc *ipcc = dev_get_priv(dev);
        fdt_addr_t addr;
-       const fdt32_t *cell;
        struct clk clk;
-       int len, ret;
+       int ret;
 
        debug("%s(dev=%p)\n", __func__, dev);
 
@@ -114,14 +113,12 @@ static int stm32_ipcc_probe(struct udevice *dev)
        ipcc->reg_base = (void __iomem *)addr;
 
        /* proc_id */
-       cell = dev_read_prop(dev, "st,proc_id", &len);
-       if (len < sizeof(fdt32_t)) {
+       ret = dev_read_u32_index(dev, "st,proc_id", 1, &ipcc->proc_id);
+       if (ret) {
                dev_dbg(dev, "Missing st,proc_id\n");
                return -EINVAL;
        }
 
-       ipcc->proc_id = fdtdec_get_number(cell, 1);
-
        if (ipcc->proc_id >= STM32_MAX_PROCS) {
                dev_err(dev, "Invalid proc_id (%d)\n", ipcc->proc_id);
                return -EINVAL;
-- 
2.17.1