| Message ID | E1tkLZB-004RZU-4A@rmk-PC.armlinux.org.uk (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | net: stmmac: cleanup transmit clock setting | expand |
| Context | Check | Description |
|---|---|---|
| netdev/tree_selection | success | Clearly marked for net-next |
| netdev/apply | fail | Patch does not apply to net-next-0 |
On Tue, Feb 18, 2025 at 11:15:05AM +0000, Russell King (Oracle) wrote: > Use the generic stmmac_set_clk_tx_rate() to configure the MAC transmit > clock. > > Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> > --- > .../stmicro/stmmac/dwmac-intel-plat.c | 24 +++---------------- > 1 file changed, 3 insertions(+), 21 deletions(-) This isn't quite the same code, but the result should be the same since clk_set_rate() will be ignored if the clock is NULL, which would be the case for !dwmac->data->tx_clk_en. Reviewed-by: Thierry Reding <treding@nvidia.com>
On Tue, Feb 25, 2025 at 09:46:56PM +0100, Thierry Reding wrote: > On Tue, Feb 18, 2025 at 11:15:05AM +0000, Russell King (Oracle) wrote: > > Use the generic stmmac_set_clk_tx_rate() to configure the MAC transmit > > clock. > > > > Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> > > --- > > .../stmicro/stmmac/dwmac-intel-plat.c | 24 +++---------------- > > 1 file changed, 3 insertions(+), 21 deletions(-) > > This isn't quite the same code, but the result should be the same since > clk_set_rate() will be ignored if the clock is NULL, which would be the > case for !dwmac->data->tx_clk_en. You're right, thanks for spotting! I'll move it out of the if() statement so the code has the exact same behaviour. Replacement patch below. > Reviewed-by: Thierry Reding <treding@nvidia.com> Thanks for the review. 8<==== From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk> Subject: [PATCH net-next] net: stmmac: intel: use generic stmmac_set_clk_tx_rate() Use the generic stmmac_set_clk_tx_rate() to configure the MAC transmit clock. Note that given the current unpatched driver structure, plat_dat->fix_mac_speed will always be populated with kmb_eth_fix_mac_speed(), even when no clock is present. We preserve this behaviour in this patch by always initialising plat_dat->clk_tx_i and plat_dat->set_clk_tx_rate. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> --- .../stmicro/stmmac/dwmac-intel-plat.c | 24 +++---------------- 1 file changed, 3 insertions(+), 21 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c index 0591756a2100..599def7b3a64 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c @@ -22,31 +22,12 @@ struct intel_dwmac { }; struct intel_dwmac_data { - void (*fix_mac_speed)(void *priv, int speed, unsigned int mode); unsigned long ptp_ref_clk_rate; unsigned long tx_clk_rate; bool tx_clk_en; }; -static void kmb_eth_fix_mac_speed(void *priv, int speed, unsigned int mode) -{ - struct intel_dwmac *dwmac = priv; - long rate; - int ret; - - rate = rgmii_clock(speed); - if (rate < 0) { - dev_err(dwmac->dev, "Invalid speed\n"); - return; - } - - ret = clk_set_rate(dwmac->tx_clk, rate); - if (ret) - dev_err(dwmac->dev, "Failed to configure tx clock rate\n"); -} - static const struct intel_dwmac_data kmb_data = { - .fix_mac_speed = kmb_eth_fix_mac_speed, .ptp_ref_clk_rate = 200000000, .tx_clk_rate = 125000000, .tx_clk_en = true, @@ -89,8 +70,6 @@ static int intel_eth_plat_probe(struct platform_device *pdev) * platform_match(). */ dwmac->data = device_get_match_data(&pdev->dev); - if (dwmac->data->fix_mac_speed) - plat_dat->fix_mac_speed = dwmac->data->fix_mac_speed; /* Enable TX clock */ if (dwmac->data->tx_clk_en) { @@ -132,6 +111,9 @@ static int intel_eth_plat_probe(struct platform_device *pdev) } } + plat_dat->clk_tx_i = dwmac->tx_clk; + plat_dat->set_clk_tx_rate = stmmac_set_clk_tx_rate; + plat_dat->bsp_priv = dwmac; plat_dat->eee_usecs_rate = plat_dat->clk_ptp_rate;
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c index 0591756a2100..e81d81e44127 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c @@ -22,31 +22,12 @@ struct intel_dwmac { }; struct intel_dwmac_data { - void (*fix_mac_speed)(void *priv, int speed, unsigned int mode); unsigned long ptp_ref_clk_rate; unsigned long tx_clk_rate; bool tx_clk_en; }; -static void kmb_eth_fix_mac_speed(void *priv, int speed, unsigned int mode) -{ - struct intel_dwmac *dwmac = priv; - long rate; - int ret; - - rate = rgmii_clock(speed); - if (rate < 0) { - dev_err(dwmac->dev, "Invalid speed\n"); - return; - } - - ret = clk_set_rate(dwmac->tx_clk, rate); - if (ret) - dev_err(dwmac->dev, "Failed to configure tx clock rate\n"); -} - static const struct intel_dwmac_data kmb_data = { - .fix_mac_speed = kmb_eth_fix_mac_speed, .ptp_ref_clk_rate = 200000000, .tx_clk_rate = 125000000, .tx_clk_en = true, @@ -89,8 +70,6 @@ static int intel_eth_plat_probe(struct platform_device *pdev) * platform_match(). */ dwmac->data = device_get_match_data(&pdev->dev); - if (dwmac->data->fix_mac_speed) - plat_dat->fix_mac_speed = dwmac->data->fix_mac_speed; /* Enable TX clock */ if (dwmac->data->tx_clk_en) { @@ -130,6 +109,9 @@ static int intel_eth_plat_probe(struct platform_device *pdev) goto err_tx_clk_disable; } } + + plat_dat->clk_tx_i = dwmac->tx_clk; + plat_dat->set_clk_tx_rate = stmmac_set_clk_tx_rate; } plat_dat->bsp_priv = dwmac;
Use the generic stmmac_set_clk_tx_rate() to configure the MAC transmit clock. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> --- .../stmicro/stmmac/dwmac-intel-plat.c | 24 +++---------------- 1 file changed, 3 insertions(+), 21 deletions(-)