diff options
| author | Kevin Chiu <Kevin.Chiu@quantatw.com> | 2018-08-03 18:52:18 +0800 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2018-08-09 15:47:45 +0000 |
| commit | 089b6857615a3bbf9c28b8e658da6b768650692f (patch) | |
| tree | 948fa130c8730c3951228d0a2b261fa32436da4f /src/drivers/generic/bayhub/bh720.c | |
| parent | d87a9b8e67105b29e0f54b99e4322c4090a925c4 (diff) | |
google/grunt: Override BayHub EMMC driving strength
Careena EVT SanDisk EMMC sku has high fail rate of 0x5B reboot failure.
It'll need to increase 1.8V EMMC CLK/CMD, Data driving strength for
this issue.
CLK[6:4]
CMD,DATA[3:1]
original register value: 0x6B
enhanced: 0x7F
BUG=b:111964336
BRANCH=master
TEST=emerge-grunt coreboot
Change-Id: I3db38ff12c566c258895c6643008a0472ca528bb
Signed-off-by: Kevin Chiu <Kevin.Chiu@quantatw.com>
Reviewed-on: https://review.coreboot.org/27816
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/drivers/generic/bayhub/bh720.c')
| -rw-r--r-- | src/drivers/generic/bayhub/bh720.c | 27 |
1 files changed, 6 insertions, 21 deletions
diff --git a/src/drivers/generic/bayhub/bh720.c b/src/drivers/generic/bayhub/bh720.c index 3e78b4f049..b689b679d0 100644 --- a/src/drivers/generic/bayhub/bh720.c +++ b/src/drivers/generic/bayhub/bh720.c @@ -21,28 +21,11 @@ #include <device/pci.h> #include <device/pci_ids.h> #include "chip.h" +#include "bh720.h" -enum { - BH720_PROTECT = 0xd0, - BH720_PROTECT_LOCK_OFF = 0, - BH720_PROTECT_LOCK_ON = BIT(0), - BH720_PROTECT_OFF = 0, - BH720_PROTECT_ON = BIT(31), - - BH720_LINK_CTRL = 0x90, - BH720_LINK_CTRL_L0_ENABLE = BIT(0), - BH720_LINK_CTRL_L1_ENABLE = BIT(1), - BH720_LINK_CTRL_CLKREQ = BIT(8), - - BH720_MISC2 = 0xf0, - BH720_MISC2_ASPM_DISABLE = BIT(0), - BH720_MISC2_APSM_CLKREQ_L1 = BIT(7), - BH720_MISC2_APSM_PHY_L1 = BIT(10), - BH720_MISC2_APSM_MORE = BIT(12), - - BH720_RTD3_L1 = 0x3e0, - BH720_RTD3_L1_DISABLE_L1 = BIT(28), -}; +__attribute__((weak)) void bh720_driving_strength(struct device *dev) +{ +} static void bh720_init(struct device *dev) { @@ -71,6 +54,8 @@ static void bh720_init(struct device *dev) printk(BIOS_INFO, "BayHub BH720: Power-saving enabled (link_ctrl=%#x)\n", pci_read_config32(dev, BH720_LINK_CTRL)); } + + bh720_driving_strength(dev); } static struct pci_operations pci_ops = { |