From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jorge Ramirez-Ortiz, Gmail Date: Fri, 17 Jan 2020 19:40:16 +0100 Subject: question: mx7ulp - LDO_ENABLED_MODE In-Reply-To: References: <20200116203000.GA21781@trex> <20200117165104.GC3054@trex> Message-ID: <20200117184016.GD3054@trex> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: quoted-printable To: u-boot@lists.denx.de On 17/01/20 14:18:55, Fabio Estevam wrote: > On Fri, Jan 17, 2020 at 1:51 PM Jorge Ramirez-Ortiz, Gmail > wrote: >=20 > > btw was checking the TRM manual (Chapter 28, PMC - page 1172) > > > > [..] > > PMC1 power mode[LDOVL] fields don=E2=80=99t necessarily satisfy the ope= ration voltage levels > > required by the system. Such operation voltage requirements can be foun= d on i.MX 7ULP > > Data Sheet. In this sense, no power transition should be performed befo= re ensuring the > > mentioned register fields are matching the required operation voltage l= evels expressed on > > the data sheet. > > > > =3D> 0.95V in the ldt_init function, is it in the data sheet? > > I just cant find that particular document >=20 > Yes, please take a look at https://www.nxp.com/docs/en/data-sheet/IMX7ULP= CEC.pdf >=20 > (Table 5 - Search for PMC1_STOP[LDOVL] where it shows 0.95V as the > typical value) thanks a lot Favio. The part I am working with is 08SC. (not 05 or 07). Is that the same as yours? wondering if something is different for this part...