Message ID | 1565984527-5272-3-git-send-email-skomatineni@nvidia.com |
---|---|
State | New |
Headers | show |
Series | SC7 entry and exit support for Tegra210 | expand |
On Fri, Aug 16, 2019 at 9:42 PM Sowjanya Komatineni <skomatineni@nvidia.com> wrote: > This patch adds pinctrl register read to flush all the prior pinctrl > writes and then adds barrier for pinctrl register read to complete > during resume to make sure all pinctrl changes are effective. > > Acked-by: Thierry Reding <treding@nvidia.com> > Reviewed-by: Dmitry Osipenko <digetx@gmail.com> > Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> Patch applied. Yours, Linus Walleij
diff --git a/drivers/pinctrl/tegra/pinctrl-tegra.c b/drivers/pinctrl/tegra/pinctrl-tegra.c index 5e3c00137d71..e9a7cbb9aa33 100644 --- a/drivers/pinctrl/tegra/pinctrl-tegra.c +++ b/drivers/pinctrl/tegra/pinctrl-tegra.c @@ -677,6 +677,10 @@ static int tegra_pinctrl_resume(struct device *dev) writel_relaxed(*backup_regs++, regs++); } + /* flush all the prior writes */ + readl_relaxed(pmx->regs[0]); + /* wait for pinctrl register read to complete */ + rmb(); return 0; }