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| author | Maxim Polyakov <max.senia.poliak@gmail.com> | 2019-08-29 16:51:37 +0300 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-10-04 16:21:43 +0000 |
| commit | b4383fc759a0f705d052efc696623bf3b9a917c8 (patch) | |
| tree | 85f6d784aa25a16c0c2bd49b979697f3d8e0db59 /src | |
| parent | 33ed3ebf6a1c2e2fdac4ac798ad7ce8290cbe45a (diff) | |
| download | coreboot-b4383fc759a0f705d052efc696623bf3b9a917c8.tar.xz | |
soc/skl/vr_config: set Iccmax_gt depends on CPU/GT
According to the DC Current Specifications [1], the current limit for
the graphical VR domain (Iccmax_gt) isn't same for different Kaby Lake S
CPUs. This value should depend on the iGPU model and processor TDP:
+---------------------+-----+------------+
| Segment | TDP | Icc_max GT |
+---------------------+-----+------------+
| Dual Core GT2/GT1 | 35W | |
| Dual Core GT2 | 51W | 48 A |
| Dual Core GT1 | 54W | |
+---------------------+-----+------------+
| Quad Core GT2 | 35W | 35 A |
+---------------------+-----+------------+
| Quad Core GT2 | 65W | 45 A |
| Quad Core GT2 K-SKU | 91W | |
+---------------------+-----+------------+
This patch adds the remaining Iccmax_gt current limit values from the
documentation [1].
[1] 7th Generation Intel(R) Processor Families for S Platforms and
Intel(R) Core(TM) X-Series Processor Family Datasheet, Volume 1,
December 2018, Document Number: 335195-003
Change-Id: I19766e4f8fab6b48565b65ed4cf13efbc213e654
Signed-off-by: Maxim Polyakov <max.senia.poliak@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35166
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/skylake/vr_config.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/src/soc/intel/skylake/vr_config.c b/src/soc/intel/skylake/vr_config.c index 089dd5d572..fc48558f2e 100644 --- a/src/soc/intel/skylake/vr_config.c +++ b/src/soc/intel/skylake/vr_config.c @@ -117,12 +117,12 @@ static uint16_t get_sku_icc_max(int domain) * +----------------+-------------+---------------+------+-----+ * | Domain/Setting | SA | IA | GTUS | GTS | * +----------------+-------------+---------------+------+-----+ - * | IccMax(KBL-S) | 11.1A | 100A | 45A | 45A | - * | | | ... | | | - * | | | 40A | | | + * | IccMax(KBL-S) | 11.1A | 100A | 48A | 48A | + * | | | ... | 45A | 45A | + * | | | 40A | 35A | 35A | * +----------------+-------------+---------------+------+-----+ - * | IccMax(KBL-H) | 11.1A(45W) | 68A | 55A | 55A | - * | | 6.6A(Others)| 60A | | | + * | IccMax(KBL-H) | 11.1A (45W) | 68A | 55A | 55A | + * | | 6.6A (18W) | 60A | | | * +----------------+-------------+---------------+------+-----+ * | IccMax(KBL-U/R)| 6A(U42) | 64A(U42) | 31A | 31A | * | | 4.5A(Others)| 29A(P/C) | | | @@ -139,8 +139,8 @@ static uint16_t get_sku_icc_max(int domain) uint16_t icc_max[NUM_VR_DOMAINS] = { VR_CFG_AMP(11.1), VR_CFG_AMP(40), - VR_CFG_AMP(45), - VR_CFG_AMP(45), + VR_CFG_AMP(48), + VR_CFG_AMP(48), }; if (tdp >= 54) icc_max[VR_IA_CORE] = VR_CFG_AMP(58); @@ -155,13 +155,17 @@ static uint16_t get_sku_icc_max(int domain) uint16_t icc_max[NUM_VR_DOMAINS] = { VR_CFG_AMP(11.1), VR_CFG_AMP(66), - VR_CFG_AMP(55), - VR_CFG_AMP(55), + VR_CFG_AMP(45), + VR_CFG_AMP(45), }; if (tdp >= 91) icc_max[VR_IA_CORE] = VR_CFG_AMP(100); else if (tdp >= 65) icc_max[VR_IA_CORE] = VR_CFG_AMP(79); + else if (tdp >= 35) { + icc_max[VR_GT_UNSLICED] = VR_CFG_AMP(35); + icc_max[VR_GT_SLICED] = VR_CFG_AMP(35); + } return icc_max[domain]; } |