St. Thomas explained well in regards to this question…(see quote above) as have a great many Catholic Theologians over the ages…(Garigou-Lagrange stated in his time…that such was generally held by Theologians)
Christ “sees”…where as Faith is for those who do not see (Heb 11:1)
Now in some semantic understandings of the word “Faith”…such as trust…such can be said…(and other like ways…or perhaps analogically in some sense)
but it is not said in the Gospels nor I believe in the Catechism anywhere… that Jesus had Faith…
From the CDF a large quote which again sheds great light on the question…
forums.catholic-questions.org/showpost.php?p=7197785&postcount=67
For example: “The filial and messianic consciousness of Jesus is the direct consequence of his ontology as Son of God made man. If Jesus were a believer like ourselves, albeit in an exemplary manner, he would not be able to be the true Revealer showing us the face of the Father. …”
“…it is precisely the intimacy and the direct and immediate knowledge which he has of the Father that allows Jesus to reveal to men the mystery of divine love. Only in this way can Jesus bring us into divine love.”
He is the* witness* who has seen the Father…who knows him…who reveals him whom he knows…he is the witness* we* have Faith in!
And of course nowhere in the Gospels do we find Jesus being said to have Faith.or even in the New Testament as a whole…where surely if he had such would have been made very clear…just as was the case with so many persons in their pages…from Abraham to unnamed persons seeking the healing of Christ…
As to his knowledge:
Christ’s soul and his human knowledge
471 Apollinarius of Laodicaea asserted that in Christ the divine Word had replaced the soul or spirit. Against this error the Church confessed that the eternal Son also assumed a rational, human soul.100
472 This human soul that the Son of God assumed is endowed with a true human knowledge. As such, this knowledge could not in itself be unlimited: it was exercised in the historical conditions of his existence in space and time. This is why the Son of God could, when he became man, “increase in wisdom and in stature, and in favor with God and man”,101 and would even have to inquire for himself about what one in the human condition can learn only from experience.102 This corresponded to the reality of his voluntary emptying of himself, taking “the form of a slave”.103
473 But at the same time, this truly human knowledge of God’s Son expressed the divine life of his person.104 "The human nature of God’s Son, not by itself but by its union with the Word, knew and showed forth in itself everything that pertains to God."105 Such is first of all the case with the intimate and immediate knowledge that the Son of God made man has of his Father.106 The Son in his human knowledge also showed the divine penetration he had into the secret thoughts of human hearts.107
474 By its union to the divine wisdom in the person of the Word incarnate, Christ enjoyed in his human knowledge the fullness of understanding of the eternal plans he had come to reveal.108 What he admitted to not knowing in this area, he elsewhere declared himself not sent to reveal.109
vatican.va/archive/catechism/p122a3p1.htm#III