Extend the NETC block control driver to support the i.MX94 SoC.
Acked-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Alice Guo <alice.guo@nxp.com>
In netc_blk_ctrl_probe the test for failure of the function
clk_prepare_enable should not return PTR_ERR(ipg_clk) as it does not
check IS_ERR(ipg_clk) instead it should return err as that is what is
holding the error code in this case.
This issue was found by Smatch.
Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
The netc-blk-ctrl driver is used to configure Integrated Endpoint
Register Block (IERB) and Privileged Register Block (PRB) of NETC.
For i.MX platforms, it is also used to configure the NETCMIX block.
The IERB contains registers that are used for pre-boot initialization,
debug, and non-customer configuration. The PRB controls global reset
and global error handling for NETC. The NETCMIX block is mainly used
to set MII protocol and PCS protocol of the links, it also contains
settings for some other functions.
Note the IERB configuration registers can only be written after being
unlocked by PRB, otherwise, all write operations are inhibited. A warm
reset is performed when the IERB is unlocked, and it results in an FLR
to all NETC devices. Therefore, all NETC device drivers must be probed
or initialized after the warm reset is finished.
Ported from Linux 6.13-rc as of commit
fe5ba6bf91b3 ("net: enetc: add initial netc-blk-ctrl driver support")
Signed-off-by: Marek Vasut <marex@denx.de>
