Commit b4c5f83a authored by Rusaimi Amira Ruslan's avatar Rusaimi Amira Ruslan Committed by David S. Miller
Browse files

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: default avatarRusaimi Amira Ruslan <rusaimi.amira.rusaimi@intel.com>
Signed-off-by: default avatarVoon Weifeng <weifeng.voon@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3f53094d

drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c

+9 −0
Original line number Diff line number Diff line
@@ -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) {

drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c

+9 −0
Original line number Diff line number Diff line
@@ -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;

include/linux/stmmac.h

+1 −0
Original line number Diff line number Diff line
@@ -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

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