shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-05 02:21:52 +09:00
Code Issues Packages Projects Releases Wiki Activity

net: stmmac: Fallback to Platform Data clock in Watchdog conversion

Browse Source 
[ Upstream commit 4ec5302fa9 ]

If we don't have DT then stmmac_clk will not be available. Let's add a
new Platform Data field so that we can specify the refclk by this mean.

This way we can still use the coalesce command in PCI based setups.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jose Abreu
2019-01-30 15:54:19 +01:00
committed by Greg Kroah-Hartman
parent 8096bc39c6
commit 46ba03c591
2 changed files with 11 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
View File

@@ -719,8 +719,11 @@ static u32 stmmac_usec2riwt(u32 usec, struct stmmac_priv *priv)
{
unsigned long clk = clk_get_rate(priv->plat->stmmac_clk);
if (!clk)
return 0;
if (!clk) {
clk = priv->plat->clk_ref_rate;
if (!clk)
return 0;
}
return (usec * (clk / 1000000)) / 256;
}
@@ -729,8 +732,11 @@ static u32 stmmac_riwt2usec(u32 riwt, struct stmmac_priv *priv)
{
unsigned long clk = clk_get_rate(priv->plat->stmmac_clk);
if (!clk)
return 0;
if (!clk) {
clk = priv->plat->clk_ref_rate;
if (!clk)
return 0;
}
return (riwt * 256) / (clk / 1000000);
}

1
include/linux/stmmac.h
View File

@@ -184,6 +184,7 @@ struct plat_stmmacenet_data {
struct clk *pclk;
struct clk *clk_ptp_ref;
unsigned int clk_ptp_rate;
unsigned int clk_ref_rate;
struct reset_control *stmmac_rst;
struct stmmac_axi *axi;
int has_gmac4;