diff options
| author | Kein Yuan <kein.yuan@intel.com> | 2014-06-27 09:12:57 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-04-02 17:27:28 +0200 |
| commit | c9bf446ee93fb2334117b97e8ed94b8f78e6856d (patch) | |
| tree | 3882f8390cf9abecf4008130dfffcbee721f0339 /src | |
| parent | 642e598102a48a5ffd76aae0d21795881a56c6d8 (diff) | |
| download | coreboot-c9bf446ee93fb2334117b97e8ed94b8f78e6856d.tar.xz | |
baytrail: Change USB3 PLL VCO and iCLK PLL current on BYT-M/D CPU
Intel will be making slight changes to USB3 PLL VCO and iCLK PLL current
on C0 stepping of BYT-M/D C0 stepping in order to meet the high demands
for these processors.
Pre-conversion materials are compatible with USB PLL VCO current increase.
Post-conversion materials ARE REQUIRED to be run with increased USB3 PLL
VCO current.
BUG=chrome-os-partner:31199
TEST=Boot Rambi, then read USHPHY_CDN_PLL_CONTROL and verify register
has new value.
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Original-Commit-Id: bc01a3df80f5bd7fd86047c8bbf1584d19363e3b
Original-Change-Id: Ie9c3d0afd54ea7ced2c76ebb948de95be0828fa0
Original-Signed-off-by: Kein Yuan <kein.yuan@intel.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/211337
Original-Commit-Queue: Shawn Nematbakhsh <shawnn@chromium.org>
Original-Tested-by: Shawn Nematbakhsh <shawnn@chromium.org>
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Original-(cherry picked from commit df20eca47ca0ff33baf5d554ef11dd2b35706a5d)
Original-Reviewed-on: https://chromium-review.googlesource.com/205970
Original-Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/217772
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Commit-Queue: Kenji Chen <kenji.chen@intel.com>
Original-Tested-by: Kenji Chen <kenji.chen@intel.com>
Change-Id: I1c825992a2b4dfac86f77cde567d2471ca4c19e6
Reviewed-on: http://review.coreboot.org/9200
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/baytrail/xhci.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/soc/intel/baytrail/xhci.c b/src/soc/intel/baytrail/xhci.c index 19339e4b62..21a0c5fcd9 100644 --- a/src/soc/intel/baytrail/xhci.c +++ b/src/soc/intel/baytrail/xhci.c @@ -27,6 +27,8 @@ #include <baytrail/iomap.h> #include <baytrail/iosf.h> +#include <baytrail/lpc.h> +#include <baytrail/pattrs.h> #include <baytrail/pci_devs.h> #include <baytrail/pmc.h> #include <baytrail/ramstage.h> @@ -227,6 +229,13 @@ static void xhci_init(device_t dev) else reg_script_run_on_dev(dev, xhci_init_boot_script); + /* C0 steppings change iCLK/USB PLL VCO settings from 5 to 7 */ + if (pattrs_get()->stepping == STEP_C0) { + uint32_t reg = iosf_ushphy_read(USHPHY_CDN_PLL_CONTROL); + reg |= 0x00700000; + iosf_ushphy_write(USHPHY_CDN_PLL_CONTROL, reg); + } + /* Finalize Initialization */ reg_script_run_on_dev(dev, xhci_hc_init); |