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pinctrl: renesas: Fix pin control matching on R-Car H3e-2G

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As R-Car H3 ES1.x (R8A77950) and R-Car ES2.0+ (R8A77951) use the same
compatible value, the pin control driver relies on soc_device_match()
with soc_id = "r8a7795" and the (non)matching of revision = "ES1.*" to
match with and distinguish between the two SoC variants.  The
corresponding entries in the normal of_match_table are present only to
make the optional sanity checks work.

The R-Car H3e-2G (R8A779M1) SoC is a different grading of the R-Car H3
ES3.0 (R8A77951) SoC.  It uses the same compatible values for individual
devices, but has an additional compatible value for the root node.
When running on an R-Car H3e-2G SoC, soc_device_match() with soc_id =
"r8a7795" does not return a match.  Hence the pin control driver falls
back to the normal of_match_table, and, as the R8A77950 entry is listed
first, incorrectly uses the sub-driver for R-Car H3 ES1.x.

Fix this by moving the entry for R8A77951 before the entry for R8A77950.
Simplify sh_pfc_quirk_match() to only handle R-Car H3 ES1,x, as R-Car H3
ES2.0+ can now be matched using the normal of_match_table as well.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/6cdc5bfa424461105779b56f455387e03560cf66.1626707688.git.geert+renesas@glider.be
This commit is contained in:
Geert Uytterhoeven 2021-07-19 17:17:00 +02:00
parent e9d66bdbc5
commit 91d1be9fb7
2 changed files with 16 additions and 21 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

33
drivers/pinctrl/renesas/core.c
View file

@ -571,19 +571,23 @@ static const struct of_device_id sh_pfc_of_table[] = {
.data = &r8a7794_pinmux_info,
},
#endif
/* Both r8a7795 entries must be present to make sanity checks work */
#ifdef CONFIG_PINCTRL_PFC_R8A77950
{
.compatible = "renesas,pfc-r8a7795",
.data = &r8a77950_pinmux_info,
},
#endif
/*
* Both r8a7795 entries must be present to make sanity checks work, but only
* the first entry is actually used.
* R-Car H3 ES1.x is matched using soc_device_match() instead.
*/
#ifdef CONFIG_PINCTRL_PFC_R8A77951
{
.compatible = "renesas,pfc-r8a7795",
.data = &r8a77951_pinmux_info,
},
#endif
#ifdef CONFIG_PINCTRL_PFC_R8A77950
{
.compatible = "renesas,pfc-r8a7795",
.data = &r8a77950_pinmux_info,
},
#endif
#ifdef CONFIG_PINCTRL_PFC_R8A77960
{
.compatible = "renesas,pfc-r8a7796",
@ -1085,26 +1089,20 @@ static inline void sh_pfc_check_driver(struct platform_driver *pdrv) {}
#ifdef CONFIG_OF
static const void *sh_pfc_quirk_match(void)
{
#if defined(CONFIG_PINCTRL_PFC_R8A77950) || \
defined(CONFIG_PINCTRL_PFC_R8A77951)
#ifdef CONFIG_PINCTRL_PFC_R8A77950
const struct soc_device_attribute *match;
static const struct soc_device_attribute quirks[] = {
{
.soc_id = "r8a7795", .revision = "ES1.*",
.data = &r8a77950_pinmux_info,
},
{
.soc_id = "r8a7795",
.data = &r8a77951_pinmux_info,
},
{ /* sentinel */ }
};
match = soc_device_match(quirks);
if (match)
return match->data ?: ERR_PTR(-ENODEV);
#endif /* CONFIG_PINCTRL_PFC_R8A77950 || CONFIG_PINCTRL_PFC_R8A77951 */
return match->data;
#endif /* CONFIG_PINCTRL_PFC_R8A77950 */
return NULL;
}
@ -1119,9 +1117,6 @@ static int sh_pfc_probe(struct platform_device *pdev)
#ifdef CONFIG_OF
if (pdev->dev.of_node) {
info = sh_pfc_quirk_match();
if (IS_ERR(info))
return PTR_ERR(info);
if (!info)
info = of_device_get_match_data(&pdev->dev);
} else

4
drivers/pinctrl/renesas/sh_pfc.h
View file

@ -332,8 +332,8 @@ extern const struct sh_pfc_soc_info r8a7791_pinmux_info;
extern const struct sh_pfc_soc_info r8a7792_pinmux_info;
extern const struct sh_pfc_soc_info r8a7793_pinmux_info;
extern const struct sh_pfc_soc_info r8a7794_pinmux_info;
extern const struct sh_pfc_soc_info r8a77950_pinmux_info __weak;
extern const struct sh_pfc_soc_info r8a77951_pinmux_info __weak;
extern const struct sh_pfc_soc_info r8a77950_pinmux_info;
extern const struct sh_pfc_soc_info r8a77951_pinmux_info;
extern const struct sh_pfc_soc_info r8a77960_pinmux_info;
extern const struct sh_pfc_soc_info r8a77961_pinmux_info;
extern const struct sh_pfc_soc_info r8a77965_pinmux_info;