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| author | Richard Zhu <hongxing.zhu@nxp.com> | 2021-03-23 08:54:43 +0800 |
|---|---|---|
| committer | Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com> | 2021-04-27 10:42:05 +0000 |
| commit | 122206c61ff9b70374db0f92a22bc481348981e2 (patch) | |
| tree | 30c64e7366abafafb5e2b366a3df2fa35dec475a /arch/arm64/boot/dts/freescale/imx8mp-evk.dts | |
| parent | 4e0f7250876e096f938cb4dc7b1943d86037dc05 (diff) | |
MLK-25349-3 PCI: imx: clear vreg bypass when pcie vph voltage is 3v3
Both 1.8v and 3.3v power supplies can be used by i.MX8MQ PCIe PHY.
In default, the PCIE_VPH voltage is suggested to be 1.8v refer to data
sheet. When PCIE_VPH is supplied by 3.3v in the HW schematic design,
the VREG_BYPASS bits of GPR registers should be cleared from default
value 1b'1 to 1b'0. Thus, the internal 3v3 to 1v8 translator would be
turned on.
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: Jun Li <jun.li@nxp.com>
(cherry picked from commit 94e84f467b688ce79eb3239f1516f6009b75a19b)
(cherry picked from commit 9ffc9044e99182f743ff272af71d8888f2d8665c)
Signed-off-by: Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com>
Diffstat (limited to 'arch/arm64/boot/dts/freescale/imx8mp-evk.dts')
0 files changed, 0 insertions, 0 deletions