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| author | A.s. Dong <aisheng.dong@nxp.com> | 2018-11-12 15:25:48 +0000 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2018-11-19 14:51:42 +0100 |
| commit | 571610678bf344006ab4c47c6fd0a842e9ac6a1b (patch) | |
| tree | 1119d8c6a9c9a1656e3b63c977f073b39c30b5b0 /drivers/pinctrl | |
| parent | 81c9d563cc7413135f398d95676f947877f9cf0f (diff) | |
| download | linux-571610678bf344006ab4c47c6fd0a842e9ac6a1b.tar.bz2 | |
pinctrl: imx: fix NO_PAD_CTL setting for MMIO pads
After patch b96eea718bf6 ("pinctrl: fsl: add scu based pinctrl support"),
NO_PAD_CTL pads map are not skipped anymore which results in
a possible memory corruption. As we actually only need to create config
maps for SCU pads and MMIO pads which are not using the default config
(a.k.a IMX_NO_PAD_CTL), so let's add a proper check before creating
the config maps. And during MMIO pads parsing, we also need update the
list_p point as SCU case to ensure the pin data next parsed is correct.
Cc: Linus Walleij <linus.walleij@linaro.org>
Fixes: b96eea718bf6 ("pinctrl: fsl: add scu based pinctrl support")
Reported-by: Martin Kaiser <martin@kaiser.cx>
Suggested-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Reviewed-by: Martin Kaiser <martin@kaiser.cx>
Tested-by: Leonard Crestez <leonard.crestez@nxp.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/freescale/pinctrl-imx.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c index 78d33dfb4d2d..188001beb298 100644 --- a/drivers/pinctrl/freescale/pinctrl-imx.c +++ b/drivers/pinctrl/freescale/pinctrl-imx.c @@ -108,6 +108,15 @@ static int imx_dt_node_to_map(struct pinctrl_dev *pctldev, new_map++; for (i = j = 0; i < grp->num_pins; i++) { pin = &((struct imx_pin *)(grp->data))[i]; + + /* + * We only create config maps for SCU pads or MMIO pads that + * are not using the default config(a.k.a IMX_NO_PAD_CTL) + */ + if (!(info->flags & IMX_USE_SCU) && + (pin->conf.mmio.config & IMX_NO_PAD_CTL)) + continue; + new_map[j].type = PIN_MAP_TYPE_CONFIGS_PIN; new_map[j].data.configs.group_or_pin = pin_get_name(pctldev, pin->pin); @@ -120,7 +129,7 @@ static int imx_dt_node_to_map(struct pinctrl_dev *pctldev, new_map[j].data.configs.configs = (unsigned long *)&pin->conf.scu; new_map[j].data.configs.num_configs = 2; - } else if (!(pin->conf.mmio.config & IMX_NO_PAD_CTL)) { + } else { new_map[j].data.configs.configs = &pin->conf.mmio.config; new_map[j].data.configs.num_configs = 1; @@ -549,6 +558,8 @@ static void imx_pinctrl_parse_pin_mmio(struct imx_pinctrl *ipctl, pin_mmio->config = config & ~IMX_PAD_SION; } + *list_p = list; + dev_dbg(ipctl->dev, "%s: 0x%x 0x%08lx", info->pins[*pin_id].name, pin_mmio->mux_mode, pin_mmio->config); } |