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SubjectRe: [PATCH 2/4] firmware: xilinx: Add DLL reset support
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On 21. 01. 20 11:21, Manish Narani wrote:
> SD DLL resets are required for some of the operations on ZynqMP platform.
> Add DLL reset support in ZynqMP firmware driver for SD DLL reset.
>
> Signed-off-by: Manish Narani <manish.narani@xilinx.com>
> ---
> drivers/firmware/xilinx/zynqmp.c | 1 +
> include/linux/firmware/xlnx-zynqmp.h | 9 ++++++++-
> 2 files changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
> index 89eb198cee5e..165ec0f1e10a 100644
> --- a/drivers/firmware/xilinx/zynqmp.c
> +++ b/drivers/firmware/xilinx/zynqmp.c
> @@ -469,6 +469,7 @@ static int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id)
> static inline int zynqmp_is_valid_ioctl(u32 ioctl_id)
> {
> switch (ioctl_id) {
> + case IOCTL_SD_DLL_RESET:
> case IOCTL_SET_SD_TAPDELAY:
> case IOCTL_SET_PLL_FRAC_MODE:
> case IOCTL_GET_PLL_FRAC_MODE:
> diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
> index e41ad9e37136..01a6d972b8a8 100644
> --- a/include/linux/firmware/xlnx-zynqmp.h
> +++ b/include/linux/firmware/xlnx-zynqmp.h
> @@ -92,7 +92,8 @@ enum pm_ret_status {
> };
>
> enum pm_ioctl_id {
> - IOCTL_SET_SD_TAPDELAY = 7,
> + IOCTL_SD_DLL_RESET = 6,
> + IOCTL_SET_SD_TAPDELAY,
> IOCTL_SET_PLL_FRAC_MODE,
> IOCTL_GET_PLL_FRAC_MODE,
> IOCTL_SET_PLL_FRAC_DATA,
> @@ -262,6 +263,12 @@ enum tap_delay_type {
> PM_TAPDELAY_OUTPUT,
> };
>
> +enum dll_reset_type {
> + PM_DLL_RESET_ASSERT,
> + PM_DLL_RESET_RELEASE,
> + PM_DLL_RESET_PULSE,
> +};
> +
> /**
> * struct zynqmp_pm_query_data - PM query data
> * @qid: query ID
>

Acked-by: Michal Simek <michal.simek@xilinx.com>

Thanks,
Michal

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