diff options
| author | Rusaimi Amira Ruslan <rusaimi.amira.rusaimi@intel.com> | 2020-09-28 18:12:12 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-09-28 18:43:57 -0700 |
| commit | b4c5f83ae3f3e2b3239751c304e424eace62448b (patch) | |
| tree | cf23ef2e88d5fe01ca0106a9ff45b4d4c127975e /drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c | |
| parent | 3f53094ded4a78c87f9dada995e01cc491c196dd (diff) | |
| download | lwn-b4c5f83ae3f3e2b3239751c304e424eace62448b.tar.gz lwn-b4c5f83ae3f3e2b3239751c304e424eace62448b.zip | |
stmmac: intel: Adding ref clock 1us tic for LPI cntr
Adding reference clock (1us tic) for all LPI timer on Intel platforms.
The reference clock is derived from ptp clk. This also enables all LPI
counter.
Signed-off-by: Rusaimi Amira Ruslan <rusaimi.amira.rusaimi@intel.com>
Signed-off-by: Voon Weifeng <weifeng.voon@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c index ab0a81e0fea1..2af9458be95f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c @@ -6,6 +6,7 @@ #include <linux/pci.h> #include <linux/dmi.h> #include "dwmac-intel.h" +#include "dwmac4.h" #include "stmmac.h" struct intel_priv_data { @@ -295,6 +296,7 @@ static int intel_mgbe_common_data(struct pci_dev *pdev, plat->axi->axi_blen[2] = 16; plat->ptp_max_adj = plat->clk_ptp_rate; + plat->eee_usecs_rate = plat->clk_ptp_rate; /* Set system clock */ plat->stmmac_clk = clk_register_fixed_rate(&pdev->dev, @@ -623,6 +625,13 @@ static int intel_eth_pci_probe(struct pci_dev *pdev, if (ret) return ret; + if (plat->eee_usecs_rate > 0) { + u32 tx_lpi_usec; + + tx_lpi_usec = (plat->eee_usecs_rate / 1000000) - 1; + writel(tx_lpi_usec, res.addr + GMAC_1US_TIC_COUNTER); + } + ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES); if (ret < 0) return ret; |