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net: ti: icssg-prueth: Enable PTP timestamping support for SR1.0 devices

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Enable PTP support for AM65x SR1.0 devices by registering with the IEP
infrastructure in order to expose a PTP clock to userspace.

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Signed-off-by: Diogo Ivo <diogo.ivo@siemens.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Diogo Ivo 2024-06-17 16:21:40 +01:00 committed by David S. Miller
parent 9f1f70dd85
commit 5e1e43893b
1 changed files with 50 additions and 1 deletions
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51
drivers/net/ethernet/ti/icssg/icssg_prueth_sr1.c
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@ -1011,16 +1011,44 @@ static int prueth_probe(struct platform_device *pdev)
dev_dbg(dev, "sram: pa %llx va %p size %zx\n", prueth->msmcram.pa,
prueth->msmcram.va, prueth->msmcram.size);
prueth->iep0 = icss_iep_get_idx(np, 0);
if (IS_ERR(prueth->iep0)) {
ret = dev_err_probe(dev, PTR_ERR(prueth->iep0),
"iep0 get failed\n");
goto free_pool;
}
prueth->iep1 = icss_iep_get_idx(np, 1);
if (IS_ERR(prueth->iep1)) {
ret = dev_err_probe(dev, PTR_ERR(prueth->iep1),
"iep1 get failed\n");
goto put_iep0;
}
ret = icss_iep_init(prueth->iep0, NULL, NULL, 0);
if (ret) {
dev_err_probe(dev, ret, "failed to init iep0\n");
goto put_iep;
}
ret = icss_iep_init(prueth->iep1, NULL, NULL, 0);
if (ret) {
dev_err_probe(dev, ret, "failed to init iep1\n");
goto exit_iep0;
}
if (eth0_node) {
ret = prueth_netdev_init(prueth, eth0_node);
if (ret) {
dev_err_probe(dev, ret, "netdev init %s failed\n",
eth0_node->name);
goto free_pool;
goto exit_iep;
}
if (of_find_property(eth0_node, "ti,half-duplex-capable", NULL))
prueth->emac[PRUETH_MAC0]->half_duplex = 1;
prueth->emac[PRUETH_MAC0]->iep = prueth->iep0;
}
if (eth1_node) {
@ -1033,6 +1061,8 @@ static int prueth_probe(struct platform_device *pdev)
if (of_find_property(eth1_node, "ti,half-duplex-capable", NULL))
prueth->emac[PRUETH_MAC1]->half_duplex = 1;
prueth->emac[PRUETH_MAC1]->iep = prueth->iep1;
}
/* register the network devices */
@ -1091,6 +1121,19 @@ netdev_exit:
prueth_netdev_exit(prueth, eth_node);
}
exit_iep:
icss_iep_exit(prueth->iep1);
exit_iep0:
icss_iep_exit(prueth->iep0);
put_iep:
icss_iep_put(prueth->iep1);
put_iep0:
icss_iep_put(prueth->iep0);
prueth->iep0 = NULL;
prueth->iep1 = NULL;
free_pool:
gen_pool_free(prueth->sram_pool,
(unsigned long)prueth->msmcram.va, msmc_ram_size);
@ -1138,6 +1181,12 @@ static void prueth_remove(struct platform_device *pdev)
prueth_netdev_exit(prueth, eth_node);
}
icss_iep_exit(prueth->iep1);
icss_iep_exit(prueth->iep0);
icss_iep_put(prueth->iep1);
icss_iep_put(prueth->iep0);
gen_pool_free(prueth->sram_pool,
(unsigned long)prueth->msmcram.va,
MSMC_RAM_SIZE_SR1);