diff options
| author | John Garry <john.garry@huawei.com> | 2016-10-04 14:11:11 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-11-09 01:29:46 +0300 |
| commit | 3bc45af81d0dff722c5a2d5d009f2d2d91b52b56 (patch) | |
| tree | 3bf9b1a03b0af9c1b510ab7c2320eaddca0dd4bd /drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | |
| parent | 039ae102a8d43bbaa00e678b37f58310f4674650 (diff) | |
| download | linux-3bc45af81d0dff722c5a2d5d009f2d2d91b52b56.tar.xz | |
scsi: hisi_sas: Add v2 hw support for different refclk
The hip06 D03 and hip07 D05 boards have different reference clock
frequencies for the SAS controller.
Register PHY_CTRL needs to be programmed differently according to this
frequency, so add support for this.
The default register setting in PHY_CTRL is for 50MHz, so only update
this register when the refclk frequency is 66MHz.
For ACPI we expect the _RST handler to set the correct value for
PHY_CTRL (we're forced to take different approach for DT and ACPI as
ACPI does not support fixed-clock device).
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/hisi_sas/hisi_sas_v2_hw.c')
| -rw-r--r-- | drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c index 758e06f14d4a..0763b4764ad5 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c @@ -836,7 +836,9 @@ static void init_reg_v2_hw(struct hisi_hba *hisi_hba) hisi_sas_phy_write32(hisi_hba, i, SL_RX_BCAST_CHK_MSK, 0x0); hisi_sas_phy_write32(hisi_hba, i, CHL_INT_COAL_EN, 0x0); hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_OOB_RESTART_MSK, 0x0); - hisi_sas_phy_write32(hisi_hba, i, PHY_CTRL, 0x199B694); + if (hisi_hba->refclk_frequency_mhz == 66) + hisi_sas_phy_write32(hisi_hba, i, PHY_CTRL, 0x199B694); + /* else, do nothing -> leave it how you found it */ } for (i = 0; i < hisi_hba->queue_count; i++) { |