On Saturday, June 3, 2017 12:57:50 PM CEST Varadarajan Narayanan wrote:
> Add initial pinctrl driver to support pin configuration with
> pinctrl framework for ipq8074.
>
> Signed-off-by: Manoharan Vijaya Raghavan <mraghava@xxxxxxxxxxxxxx>
> Signed-off-by: Varadarajan Narayanan <varada@xxxxxxxxxxxxxx>
> ---
> +- bias-disable:
> + Usage: optional
> + Value type: <none>
> + Definition: The specified pins should be configued as no pull.
> +
> +- bias-pull-down:
> + Usage: optional
> + Value type: <none>
> + Definition: The specified pins should be configued as pull down.
> +
> +- bias-pull-up:
> + Usage: optional
> + Value type: <none>
> + Definition: The specified pins should be configued as pull up.
> +
> +#define REG_SIZE 0x1000
> +#define PINGROUP(id, f1, f2, f3, f4, f5, f6, f7, f8, f9) \
> + { \
> + .name = "gpio" #id, \
> + .pins = gpio##id##_pins, \
> + .npins = (unsigned int)ARRAY_SIZE(gpio##id##_pins), \
> + .funcs = (int[]){ \
> + msm_mux_gpio, /* gpio mode */ \
> + msm_mux_##f1, \
> + msm_mux_##f2, \
> + msm_mux_##f3, \
> + msm_mux_##f4, \
> + msm_mux_##f5, \
> + msm_mux_##f6, \
> + msm_mux_##f7, \
> + msm_mux_##f8, \
> + msm_mux_##f9 \
> + }, \
> + .nfuncs = 10, \
> + .ctl_reg = REG_SIZE * id, \
> + .io_reg = 0x4 + REG_SIZE * id, \
> + .intr_cfg_reg = 0x8 + REG_SIZE * id, \
> + .intr_status_reg = 0xc + REG_SIZE * id, \
> + .intr_target_reg = 0x8 + REG_SIZE * id, \
> + .mux_bit = 2, \
> + .pull_bit = 0, \
> + .drv_bit = 6, \
> + .oe_bit = 9, \
> + .in_bit = 0, \
> + .out_bit = 1, \
> + .intr_enable_bit = 0, \
> + .intr_status_bit = 0, \
> + .intr_target_bit = 5, \
> + .intr_raw_status_bit = 4, \
> + .intr_polarity_bit = 1, \
> + .intr_detection_bit = 2, \
> + .intr_detection_width = 2, \
> + }
> +
Hello,
Back in May, Ram Chandra Jangir posted a rather interesting patch on
the LEDE Mailing-List:
<https://www.mail-archive.com/lede-dev@xxxxxxxxxxxxxxxxxxx/msg07691.html>
|GPIO_PULL bits configurations in TLMM_GPIO_CFG register
|differs for IPQ40xx from rest of the other qcom SoC's.
|This change add support to configure the msm_gpio_pull
|bits for ipq40xx, It is required to fix the proper
|configurations of gpio-pull bits for nand pins mux.
|
|IPQ40xx SoC:
|2'b10: Internal pull up enable.
|2'b11: Unsupport
|
|For other SoC's:
|2'b10: Keeper
|2'b11: Pull-Up
This information wasn't mentioned anywhere. In fact, the special pull-up
configuration was only discovered due to an issue with the qpic NAND on
the Cisco Meraki MR33. So I wonder what does the gpio-pull look like for
the IPQ8074? Is it the same as the IPQ40XX or does it follow the older
SoCs?
I'm asking this because I'm preparing a modified version of this patch
that will be posted once the IPQ8074 is ready.
Regards,
Christian
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