Messages in this thread | | | From | Stephen Boyd <> | Date | Thu, 28 Oct 2021 23:54:52 -0700 | Subject | Re: [PATCH v2 1/2] pinctrl: qcom: Add egpio feature support |
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Quoting Rajendra Nayak (2021-10-26 05:07:35) > From: Prasad Sodagudi <psodagud@codeaurora.org> > > egpio is a scheme which allows special power Island Domain IOs > (LPASS,SSC) to be reused as regular chip GPIOs by muxing regular > TLMM functions with Island Domain functions. > With this scheme, an IO can be controlled both by the cpu running > linux and the Island processor. This provides great flexibility to > re-purpose the Island IOs for regular TLMM usecases. > > 2 new bits are added to ctl_reg, egpio_present is a read only bit > which shows if egpio feature is available or not on a given gpio. > egpio_enable is the read/write bit and only effective if egpio_present > is 1. Once its set, the Island IO is controlled from Chip TLMM. > egpio_enable when set to 0 means the GPIO is used as Island Domain IO. > > To support this we add a new function 'egpio' which can be used to > set the egpio_enable to 0, for any other TLMM controlled functions > we set the egpio_enable to 1. > > Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org> > Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org> > ---
Does this supersede adding support for lpass pinctrl in this series[1]?
[1] https://lore.kernel.org/r/1635342097-2726-1-git-send-email-srivasam@codeaurora.org
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