diff options
| author | Yidi Lin <yidilin@chromium.org> | 2024-08-27 16:46:34 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2024-09-02 09:16:34 +0000 |
| commit | cea84e2536976581223e83fead847582694fe471 (patch) | |
| tree | d3a8882b757e86441f46c1287861afea462f0f83 /src/soc/mediatek/common/include | |
| parent | 5665bcac4f3f2d101537f751fd3d2baa66afaafc (diff) | |
soc/mediatek: Add mtk_pcie_deassert_perst for early PCIe reset
Even we assert PRSET# early to save the delay between PERST# assertion
and de-assertion. MediaTek PCIe driver still takes 47ms waiting for PCIe
link up. (1ms delay for each try)
```
[INFO ] mtk_pcie_domain_enable: PCIe link up success (47 tries)
```
Refactor common/pcie.c and add mtk_pcie_deassert_perst for early PCIe
reset. So we can de-assert PERST# at early stage to improve the boot
time.
BUG=b:361728592
TEST=emerge-cherry coreboot
Change-Id: I008e95263bfaf0119353382c2d2ce5ce29c6a382
Signed-off-by: Yidi Lin <yidilin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84117
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jianjun Wang <jianjun.wang@mediatek.com>
Diffstat (limited to 'src/soc/mediatek/common/include')
| -rw-r--r-- | src/soc/mediatek/common/include/soc/pcie_common.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/soc/mediatek/common/include/soc/pcie_common.h b/src/soc/mediatek/common/include/soc/pcie_common.h index c34bc4ee69..cfefae2c17 100644 --- a/src/soc/mediatek/common/include/soc/pcie_common.h +++ b/src/soc/mediatek/common/include/soc/pcie_common.h @@ -23,5 +23,6 @@ void mtk_pcie_domain_read_resources(struct device *dev); void mtk_pcie_domain_set_resources(struct device *dev); void mtk_pcie_domain_enable(struct device *dev); void mtk_pcie_reset(uintptr_t base_reg, bool enable); +void mtk_pcie_deassert_perst(void); #endif |