[PATCH V3 4/6] net: ethernet: stmmac: add management of clk_csr property

From: Christophe Roullier
Date: Tue Mar 05 2019 - 03:30:04 EST


In Documentation stmmac.txt there is possibility to
fixed CSR Clock range selection with property clk_csr.
This patch add the management of this property
For example to use it, add in your ethernet node DT:
clk_csr = <3>;

Signed-off-by: Christophe Roullier <christophe.roullier@xxxxxx>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 2b800ce..3031f2b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -408,6 +408,9 @@ stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
/* Default to phy auto-detection */
plat->phy_addr = -1;

+ /* Get clk_csr from device tree */
+ of_property_read_u32(np, "clk_csr", &plat->clk_csr);
+
/* "snps,phy-addr" is not a standard property. Mark it as deprecated
* and warn of its use. Remove this when phy node support is added.
*/
--
2.7.4