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 | |
| parent | 3f53094ded4a78c87f9dada995e01cc491c196dd (diff) | |
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>
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c | 9 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c | 9 | ||||
| -rw-r--r-- | include/linux/stmmac.h | 1 |
3 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c index b1323d5c95b5..f61cb997a8f6 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c @@ -11,6 +11,7 @@ #include <linux/platform_device.h> #include <linux/stmmac.h> +#include "dwmac4.h" #include "stmmac.h" #include "stmmac_platform.h" @@ -146,6 +147,14 @@ static int intel_eth_plat_probe(struct platform_device *pdev) } plat_dat->bsp_priv = dwmac; + plat_dat->eee_usecs_rate = plat_dat->clk_ptp_rate; + + if (plat_dat->eee_usecs_rate > 0) { + u32 tx_lpi_usec; + + tx_lpi_usec = (plat_dat->eee_usecs_rate / 1000000) - 1; + writel(tx_lpi_usec, stmmac_res.addr + GMAC_1US_TIC_COUNTER); + } ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); if (ret) { 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; diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h index 00e83c877496..628e28903b8b 100644 --- a/include/linux/stmmac.h +++ b/include/linux/stmmac.h @@ -200,5 +200,6 @@ struct plat_stmmacenet_data { int has_xgmac; bool vlan_fail_q_en; u8 vlan_fail_q; + unsigned int eee_usecs_rate; }; #endif |