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bgmac: reset all cores on Northstar SoC

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On the Northstar SoC (BCM4707 and BCM53018) we have to enable all GMAC
cores when we just want to use on. We iterate over all the cores and
activate them.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hauke Mehrtens 2014-01-05 01:10:46 +01:00 committed by David S. Miller
parent 48e07fbe07
commit 622a521fa4
1 changed files with 21 additions and 0 deletions
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21
drivers/net/ethernet/broadcom/bgmac.c
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@ -1446,6 +1446,27 @@ static int bgmac_probe(struct bcma_device *core)
bgmac_chip_reset(bgmac);
/* For Northstar, we have to take all GMAC core out of reset */
if (core->id.id == BCMA_CHIP_ID_BCM4707 ||
core->id.id == BCMA_CHIP_ID_BCM53018) {
struct bcma_device *ns_core;
int ns_gmac;
/* Northstar has 4 GMAC cores */
for (ns_gmac = 0; ns_gmac < 4; ns_gmac++) {
/* As northstar requirement, we have to reset all GAMCs
* before accessing one. bgmac_chip_reset() call
* bcma_core_enable() for this core. Then the other
* three GAMCs didn't reset. We do it here.
*/
ns_core = bcma_find_core_unit(core->bus,
BCMA_CORE_MAC_GBIT,
ns_gmac);
if (ns_core && !bcma_core_is_enabled(ns_core))
bcma_core_enable(ns_core, 0);
}
}
err = bgmac_dma_alloc(bgmac);
if (err) {
bgmac_err(bgmac, "Unable to alloc memory for DMA\n");