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SubjectRe: [PATCH] bus: ti-sysc: Implement quirk handling for CLKDM_NOAUTO
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On 10/12/2019 18:13, Tony Lindgren wrote:
> For dra7 dcan and dwc3 instances we need to block clockdomain autoidle.
> Let's do this with CLKDM_NOAUTO quirk flag and enable it for dcan and
> dwc3.
>
> Cc: Keerthy <j-keerthy@ti.com>
> Cc: Roger Quadros <rogerq@ti.com>
> Cc: Tero Kristo <t-kristo@ti.com>
> Signed-off-by: Tony Lindgren <tony@atomide.com>

Acked-by: Roger Quadros <rogerq@ti.com>

> ---
> drivers/bus/ti-sysc.c | 10 ++++++++--
> include/linux/platform_data/ti-sysc.h | 1 +
> 2 files changed, 9 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
> --- a/drivers/bus/ti-sysc.c
> +++ b/drivers/bus/ti-sysc.c
> @@ -473,7 +473,7 @@ static void sysc_clkdm_deny_idle(struct sysc *ddata)
> {
> struct ti_sysc_platform_data *pdata;
>
> - if (ddata->legacy_mode)
> + if (ddata->legacy_mode || (ddata->cfg.quirks & SYSC_QUIRK_CLKDM_NOAUTO))
> return;
>
> pdata = dev_get_platdata(ddata->dev);
> @@ -485,7 +485,7 @@ static void sysc_clkdm_allow_idle(struct sysc *ddata)
> {
> struct ti_sysc_platform_data *pdata;
>
> - if (ddata->legacy_mode)
> + if (ddata->legacy_mode || (ddata->cfg.quirks & SYSC_QUIRK_CLKDM_NOAUTO))
> return;
>
> pdata = dev_get_platdata(ddata->dev);
> @@ -1245,6 +1245,12 @@ static const struct sysc_revision_quirk sysc_revision_quirks[] = {
> /* Quirks that need to be set based on detected module */
> SYSC_QUIRK("aess", 0, 0, 0x10, -1, 0x40000000, 0xffffffff,
> SYSC_MODULE_QUIRK_AESS),
> + SYSC_QUIRK("dcan", 0x48480000, 0x20, -1, -1, 0xa3170504, 0xffffffff,
> + SYSC_QUIRK_CLKDM_NOAUTO),
> + SYSC_QUIRK("dwc3", 0x48880000, 0, 0x10, -1, 0x500a0200, 0xffffffff,
> + SYSC_QUIRK_CLKDM_NOAUTO),
> + SYSC_QUIRK("dwc3", 0x488c0000, 0, 0x10, -1, 0x500a0200, 0xffffffff,
> + SYSC_QUIRK_CLKDM_NOAUTO),
> SYSC_QUIRK("hdq1w", 0, 0, 0x14, 0x18, 0x00000006, 0xffffffff,
> SYSC_MODULE_QUIRK_HDQ1W),
> SYSC_QUIRK("hdq1w", 0, 0, 0x14, 0x18, 0x0000000a, 0xffffffff,
> diff --git a/include/linux/platform_data/ti-sysc.h b/include/linux/platform_data/ti-sysc.h
> --- a/include/linux/platform_data/ti-sysc.h
> +++ b/include/linux/platform_data/ti-sysc.h
> @@ -49,6 +49,7 @@ struct sysc_regbits {
> s8 emufree_shift;
> };
>
> +#define SYSC_QUIRK_CLKDM_NOAUTO BIT(21)
> #define SYSC_QUIRK_FORCE_MSTANDBY BIT(20)
> #define SYSC_MODULE_QUIRK_AESS BIT(19)
> #define SYSC_MODULE_QUIRK_SGX BIT(18)
>

--
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