bcma: add serial console support

This adds support for serial console to bcma, when operating on an SoC.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/bcma/driver_chipcommon_pmu.c b/drivers/bcma/driver_chipcommon_pmu.c
index fcc63db0ce75..354caeea6397 100644
--- a/drivers/bcma/driver_chipcommon_pmu.c
+++ b/drivers/bcma/driver_chipcommon_pmu.c
@@ -136,3 +136,29 @@ void bcma_pmu_init(struct bcma_drv_cc *cc)
         bcma_pmu_swreg_init(cc);
         bcma_pmu_workarounds(cc);
 }
+
+u32 bcma_pmu_alp_clock(struct bcma_drv_cc *cc)
+{
+        struct bcma_bus *bus = cc->core->bus;
+
+        switch (bus->chipinfo.id) {
+        case 0x4716:
+        case 0x4748:
+        case 47162:
+        case 0x4313:
+        case 0x5357:
+        case 0x4749:
+        case 53572:
+                /* always 20Mhz */
+                return 20000 * 1000;
+        case 0x5356:
+        case 0x5300:
+                /* always 25Mhz */
+                return 25000 * 1000;
+        default:
+                pr_warn("No ALP clock specified for %04X device, "
+                        "pmu rev. %d, using default %d Hz\n",
+                        bus->chipinfo.id, cc->pmu.rev, BCMA_CC_PMU_ALP_CLOCK);
+        }
+        return BCMA_CC_PMU_ALP_CLOCK;
+}