[PATCH] colibri-imx8x: Fix sc_misc_otp_fuse_read() error check

[Hiago De Franco]

On 13.03.2024 08:09, Marcel Ziswiler wrote:
> Hi Fabio
> 
> Thanks!
> 
> On Tue, 2024-03-12 at 21:36 -0300, Fabio Estevam wrote:
> > Commit aa6e698a7acd ("imx: toradex/colibri-imx8x: correct SCU API usage")
> > made an incorrect logic change in the error code check of
> > sc_misc_otp_fuse_read():
> > 
> > -       if (sc_err == SC_ERR_NONE) {
> > +       if (sc_err) {
> >                 /* DX has two A35 cores disabled */
> >                 return (val & 0xf) != 0x0;
> >         }
> > 
> > The other changes in this commit are correct.
> > 
> > sc_misc_otp_fuse_read() returns 0 on a successful fuse read.
> > 
> > This inversion causes board_mem_get_layout() to report incorrect RAM size.
> > 
> > Go back the original error check logic to fix the problem.
> > 
> > Fixes: aa6e698a7acd ("imx: toradex/colibri-imx8x: correct SCU API usage")
> > Reported-by: Hiago De Franco <hiago.franco at toradex.com>
> > Signed-off-by: Fabio Estevam <festevam at gmail.com>
> 
> Acked-by: Marcel Ziswiler <marcel.ziswiler at toradex.com>
> 

Tested-by: Hiago De Franco <hiago.franco at toradex.com> # Toradex Colibri iMX8X 1GB

> > diff --git a/board/toradex/colibri-imx8x/colibri-imx8x.c b/board/toradex/colibri-imx8x/colibri-imx8x.c
> > index 2c673a4a6b06..6fc8076163c6 100644
> > --- a/board/toradex/colibri-imx8x/colibri-imx8x.c
> > +++ b/board/toradex/colibri-imx8x/colibri-imx8x.c
> > @@ -46,7 +46,7 @@ static int is_imx8dx(void)
> >  	u32 val = 0;
> >  	int sc_err = sc_misc_otp_fuse_read(-1, 6, &val);
> >  
> > -	if (sc_err) {
> > +	if (!sc_err) {
> >  		/* DX has two A35 cores disabled */
> >  		return (val & 0xf) != 0x0;
> >  	}
> 
> Cheers
> 
> Marcel