Patch set updated for coreboot: 0277cc1 baytrail: Change USB3 PLL VCO and iCLK PLL current on BYT-M/D CPU

[Patrick Georgi]

Patrick Georgi ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/9200

-gerrit

commit 0277cc16e506ba9d93871444a7e7ae796f225529
Author: Kein Yuan 
Date:   Fri Jun 27 09:12:57 2014 -0700

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 
    Original-Commit-Id: bc01a3df80f5bd7fd86047c8bbf1584d19363e3b
    Original-Change-Id: Ie9c3d0afd54ea7ced2c76ebb948de95be0828fa0
    Original-Signed-off-by: Kein Yuan 
    Original-Reviewed-on: https://chromium-review.googlesource.com/211337
    Original-Commit-Queue: Shawn Nematbakhsh 
    Original-Tested-by: Shawn Nematbakhsh 
    Original-Reviewed-by: Duncan Laurie 
    Original-(cherry picked from commit df20eca47ca0ff33baf5d554ef11dd2b35706a5d)
    Original-Reviewed-on: https://chromium-review.googlesource.com/205970
    Original-Reviewed-by: Shawn Nematbakhsh 
    Original-Reviewed-on: https://chromium-review.googlesource.com/217772
    Original-Reviewed-by: Aaron Durbin 
    Original-Commit-Queue: Kenji Chen 
    Original-Tested-by: Kenji Chen

Change-Id: I1c825992a2b4dfac86f77cde567d2471ca4c19e6
---
 src/soc/intel/baytrail/xhci.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/soc/intel/baytrail/xhci.c b/src/soc/intel/baytrail/xhci.c
index 19339e4..21a0c5f 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);