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ARM: dts: qcom: Add of version register to figure out ntn3 version

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This change is to add version register to get the ntn3 switch version.
Added two separate reg update sequence ,
one is reg update this is needed to keep NTN3v1 in gen3,
this sequence is not needed in NTN3v2 as it is already taken care in v2
and another one is switch reg update this will update the
gen3 preset value to both NTN3v1 and NTN3v2.

Also added a optional force i2c settings flag to update the
demphasis setting prior pcie linkup in dtsi binding irrespective
of ntn3 chip version.

Change-Id: Ibb249af5455c76e789931962f2cb9449d8814a42
This commit is contained in:
Ramya SR 2021-11-24 18:49:01 +05:30
commit 122a6a86f7
2 changed files with 17 additions and 3 deletions
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13
bindings/pci/pci-msm.txt
View file

@ -629,6 +629,17 @@ i2c child node
Value Type: Array of <u32>
Definition: List of slave registers to dump by i2c read
- version-reg:
Usage: optional
Value type: <u32>
Definition: Register to find ntn3 switch version
- force-i2c-setting:
Usage: optional
Value type: <bool>
Definition: If force-i2c-setting flag is set
then de_emphasis settings are updated
irrespective of the chip version via i2c_writes
=======
Example
=======
@ -641,5 +652,7 @@ Example
ep-reset-reg = <0x801210>;
ep-reset-gpio-mask = <0xf>;
dump-regs = <0x801330 0x801350 0x801370>;
version-reg = <0x800000>;
force-i2c-setting;
};
};

7
qcom/sdxlemur-mtp-cpe.dtsi
View file

@ -91,6 +91,7 @@
gpio-config-reg = <0x801208>;
ep-reset-reg = <0x801210>;
ep-reset-gpio-mask = <0xc>;
version-reg = <0x800000>;
dump-regs = <0x801330 0x801350 0x801370>;
reg_update = <0x82c030 0x1
0x828000 0x3
@ -104,9 +105,9 @@
0x82c01c 0x10
0x82c030 0xf
0x828000 0xf
0x82b268 0x2
0x82C02C 0x4
0x8249DC 0x0>;
0x82b268 0x2>;
switch_reg_update = <0x82C02C 0x4
0x824A0C 0x4>;
};
};