Re: [PATCH v4] schemas: pci: Document PCIe T_POWER_ON
Rob Herring <[email protected]> Thu, 19 Feb 2026 07:45:27 -0600
| Newsgroups | org.kernel.vger.devicetree-spec,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel,org.kernel.vger.linux-pci |
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| Message-ID | <[email protected]> |
On Thu, Feb 05, 2026 at 03:03:46PM +0530, Krishna Chaitanya Chundru wrote: > >From PCIe r7, sec 5.5.4 & Table 5-11 in sec 5.5.5 T_POWER_ON is the > minimum amount of time (in us) that each component must wait in L1.2.Exit > after sampling CLKREQ# asserted before actively driving the interface to > ensure no device is ever actively driving into an unpowered component and > these values are based on the components and AC coupling capacitors used > in the connection linking the two components. > > This property should be used to indicate the T_POWER_ON and drivers using > this property are responsible for programming both the scale and the value > of T_POWER_ON to comply with the PCIe specification. > > Signed-off-by: Krishna Chaitanya Chundru <[email protected]> > Acked-by: Manivannan Sadhasivam <[email protected]> Applied, thanks.