Commit 85a5f963 authored by Naveen Mamindlapalli's avatar Naveen Mamindlapalli Committed by David S. Miller

octeontx2-af: Initialize PTP_SEC_ROLLOVER register properly

Since the reset value of PTP_SEC_ROLLOVER is incorrect on
CNF10KB silicon, the ptp timestamps are inaccurate. This
patch initializes the PTP_SEC_ROLLOVER register properly
for the CNF10KB silicon.
Signed-off-by: default avatarNaveen Mamindlapalli <naveenm@marvell.com>
Signed-off-by: default avatarSunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2ef4e45d
...@@ -52,12 +52,18 @@ ...@@ -52,12 +52,18 @@
#define PTP_CLOCK_COMP 0xF18ULL #define PTP_CLOCK_COMP 0xF18ULL
#define PTP_TIMESTAMP 0xF20ULL #define PTP_TIMESTAMP 0xF20ULL
#define PTP_CLOCK_SEC 0xFD0ULL #define PTP_CLOCK_SEC 0xFD0ULL
#define PTP_SEC_ROLLOVER 0xFD8ULL
#define CYCLE_MULT 1000 #define CYCLE_MULT 1000
static struct ptp *first_ptp_block; static struct ptp *first_ptp_block;
static const struct pci_device_id ptp_id_table[]; static const struct pci_device_id ptp_id_table[];
static bool is_ptp_dev_cnf10kb(struct ptp *ptp)
{
return (ptp->pdev->subsystem_device == PCI_SUBSYS_DEVID_CNF10K_B_PTP) ? true : false;
}
static bool is_ptp_dev_cn10k(struct ptp *ptp) static bool is_ptp_dev_cn10k(struct ptp *ptp)
{ {
return (ptp->pdev->device == PCI_DEVID_CN10K_PTP) ? true : false; return (ptp->pdev->device == PCI_DEVID_CN10K_PTP) ? true : false;
...@@ -290,6 +296,10 @@ void ptp_start(struct ptp *ptp, u64 sclk, u32 ext_clk_freq, u32 extts) ...@@ -290,6 +296,10 @@ void ptp_start(struct ptp *ptp, u64 sclk, u32 ext_clk_freq, u32 extts)
/* sclk is in MHz */ /* sclk is in MHz */
ptp->clock_rate = sclk * 1000000; ptp->clock_rate = sclk * 1000000;
/* Program the seconds rollover value to 1 second */
if (is_ptp_dev_cnf10kb(ptp))
writeq(0x3b9aca00, ptp->reg_base + PTP_SEC_ROLLOVER);
/* Enable PTP clock */ /* Enable PTP clock */
clock_cfg = readq(ptp->reg_base + PTP_CLOCK_CFG); clock_cfg = readq(ptp->reg_base + PTP_CLOCK_CFG);
......
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