[PATCH] pinctrl/rockchip: re-fix RK3308 pinmux bits
jay.xu at rock-chips.com
jay.xu at rock-chips.com
Sat Oct 1 18:44:02 PDT 2022
Hi Luca:
--------------
jay.xu at rock-chips.com
>Hello Jianqun,
>
>Il giorno Sat, 1 Oct 2022 08:42:25 +0800
>"jay.xu at rock-chips.com" <jay.xu at rock-chips.com> ha scritto:
>
>> Hi Luca:
>>
>> BR
>> --------------
>> jay.xu at rock-chips.com
>> >Hello Jianqun Xu,
>> >
>> >On Fri, 30 Sep 2022 18:26:20 +0800
>> >Jianqun Xu <jay.xu at rock-chips.com> wrote:
>> >
>> >> Part of pins from RK3308 SoCs have two registers to do pinmux, one is
>> >> the origin register with 2bits named by gpioxx_sel, and another with
>> >> 3bits and named by gpioxx_sel_plus.
>> >
>> >Are the "plus" registers documented anywhere?
>>
>> At RK3308 TRM CH5 GRF,
>>
>> GRF_SOC_CON13
>>
>> 3 RW 0x0 gpio2a2_sel_src_ctrl
>> IOMUX control source selection.
>> 1'b0: use basic GPIO2A_IOMUX[gpio2a2_sel]
>> 1'b1: use gpio2a2_sel_plus instead of GPIO2A_IOMUX[gpio2a2_sel]
>>
>> 2:0 RW 0x0 gpio2a2_sel_plus
>> 3'b000: GPIO2_A2
>> 3'b001: UART0_CTSN
>> 3'b010: SPI0_CLK
>> 3'b011: I2C2_SDA
>> 3'b100: Reserved
>> 3'b101: OWIRE_M2
>>
>> Sorry I don't know about the trm you got from our company, if you cannot find this part,
>> may require a new version ?
>
>First of all: is a complete TRM available for public download?
https://opensource.rock-chips.com/wiki_Main_Page
@kever should add a trm for rk3308 ?
>
>I searched again, but didn't find any.
>
>--
>Luca Ceresoli, Bootlin
>Embedded Linux and Kernel engineering
>https://bootlin.com
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