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| author | Arnd Bergmann <arnd@arndb.de> | 2011-10-20 14:51:38 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2011-10-20 14:51:38 +0200 |
| commit | 1faca4ced8594d3586302e8d1788a60932f2bbca (patch) | |
| tree | 5130aaa4803a322f3d1f0ff6406f047ed0dba475 /drivers/scsi/isci/phy.c | |
| parent | 112d17d6f75b93e1dcaec2e2232a411148b3bf71 (diff) | |
| parent | 6b6844dd54e4196dd9818bc63b319f93c37a08be (diff) | |
Merge branch 'samsung/devel' of git+ssh://git.linaro.org/home/arndbergmann/public_git/arm-soc into next/devel2
Diffstat (limited to 'drivers/scsi/isci/phy.c')
| -rw-r--r-- | drivers/scsi/isci/phy.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index 79313a7a2356..430fc8ff014a 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -104,6 +104,7 @@ sci_phy_link_layer_initialization(struct isci_phy *iphy, u32 parity_count = 0; u32 llctl, link_rate; u32 clksm_value = 0; + u32 sp_timeouts = 0; iphy->link_layer_registers = reg; @@ -211,6 +212,18 @@ sci_phy_link_layer_initialization(struct isci_phy *iphy, llctl |= SCU_SAS_LLCTL_GEN_VAL(MAX_LINK_RATE, link_rate); writel(llctl, &iphy->link_layer_registers->link_layer_control); + sp_timeouts = readl(&iphy->link_layer_registers->sas_phy_timeouts); + + /* Clear the default 0x36 (54us) RATE_CHANGE timeout value. */ + sp_timeouts &= ~SCU_SAS_PHYTOV_GEN_VAL(RATE_CHANGE, 0xFF); + + /* Set RATE_CHANGE timeout value to 0x3B (59us). This ensures SCU can + * lock with 3Gb drive when SCU max rate is set to 1.5Gb. + */ + sp_timeouts |= SCU_SAS_PHYTOV_GEN_VAL(RATE_CHANGE, 0x3B); + + writel(sp_timeouts, &iphy->link_layer_registers->sas_phy_timeouts); + if (is_a2(ihost->pdev)) { /* Program the max ARB time for the PHY to 700us so we inter-operate with * the PMC expander which shuts down PHYs if the expander PHY generates too |