[U-Boot] [PATCH 2/6] net: macb: add support for faster clk rates

Ramon Fried
2019-07-16T19:03:01Z

add support for clock rates higher than 2.4Mhz

Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Tested-by: Anup Patel <anup.patel@wdc.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
---
v2: nothing.
drivers/net/macb.c | 6 +++++-
drivers/net/macb.h | 2 ++
2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/macb.c b/drivers/net/macb.c
index 0032d4e000..0fed43bbe2 100644
--- a/drivers/net/macb.c
+++ b/drivers/net/macb.c
@@ -903,8 +903,12 @@ static u32 gem_mdc_clk_div(int id, struct macb_device *macb)
config = GEM_BF(CLK, GEM_CLK_DIV48);
else if (macb_hz < 160000000)
config = GEM_BF(CLK, GEM_CLK_DIV64);
- else
+ else if (macb_hz < 240000000)
config = GEM_BF(CLK, GEM_CLK_DIV96);
+ else if (macb_hz < 320000000)
+ config = GEM_BF(CLK, GEM_CLK_DIV128);
+ else
+ config = GEM_BF(CLK, GEM_CLK_DIV224);

return config;
}
diff --git a/drivers/net/macb.h b/drivers/net/macb.h
index 8966c793a7..9b16383eba 100644
--- a/drivers/net/macb.h
+++ b/drivers/net/macb.h
@@ -613,6 +613,8 @@
#define GEM_CLK_DIV48 3
#define GEM_CLK_DIV64 4
#define GEM_CLK_DIV96 5
+#define GEM_CLK_DIV128 6
+#define GEM_CLK_DIV224 7

/* Constants for MAN register */
#define MACB_MAN_SOF 1
--
2.22.0