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Message-ID: <CACPK8XcEn3cOjS68g_gmqfQwWNuKiRypk-_0NUm91QdUKN6Fng@mail.gmail.com>
Date: Thu, 29 Sep 2016 10:24:21 +0930
From: Joel Stanley <joel@....id.au>
To: Andrew Jeffery <andrew@...id.au>
Cc: Linus Walleij <linus.walleij@...aro.org>,
Mark Rutland <mark.rutland@....com>,
Rob Herring <robh+dt@...nel.org>, linux-gpio@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org,
OpenBMC Maillist <openbmc@...ts.ozlabs.org>
Subject: Re: [PATCH 4/8] pinctrl: aspeed-g5: Fix pin association of SPI1 function
On Wed, Sep 28, 2016 at 12:20 AM, Andrew Jeffery <andrew@...id.au> wrote:
> The SPI1 function was associated with the wrong pins: The functions that
> those pins provide is either an SPI debug or passthrough function
> coupled to SPI1. Make the SPI1 mux function configure the relevant pins
> and associate new SPI1DEBUG and SPI1PASSTHRU functions with the pins
> that were already defined.
>
> The notation used in the datasheet's multi-function pin table for the SoC is
> often creative: in this case the SYS* signals are enabled by a single bit,
> which is nothing unusual on its own, but in this case the bit was also
> participating in a multi-bit bitfield and therefore represented multiple
> functions. This fact was overlooked in the original patch.
>
> Fixes: 56e57cb6c07f (pinctrl: Add pinctrl-aspeed-g5 driver)
> Signed-off-by: Andrew Jeffery <andrew@...id.au>
Reviewed-by: Joel Stanley <joel@....id.au>
> ---
> Documentation/devicetree/bindings/pinctrl/pinctrl-aspeed.txt | 4 +-
> drivers/pinctrl/aspeed/pinctrl-aspeed-g5.c | 86 ++++++-
> 2 files changed, 81 insertions(+), 9 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-aspeed.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-aspeed.txt
> index 5e60ad18f147..2ad18c4ea55c 100644
> --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-aspeed.txt
> +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-aspeed.txt
> @@ -43,7 +43,9 @@ aspeed,ast2500-pinctrl, aspeed,g5-pinctrl:
>
> GPID0 GPID2 GPIE0 I2C10 I2C11 I2C12 I2C13 I2C14 I2C3 I2C4 I2C5 I2C6 I2C7 I2C8
> I2C9 MAC1LINK MDIO1 MDIO2 OSCCLK PEWAKE PWM0 PWM1 PWM2 PWM3 PWM4 PWM5 PWM6 PWM7
> -RGMII1 RGMII2 RMII1 RMII2 SD1 SPI1 TIMER4 TIMER5 TIMER6 TIMER7 TIMER8
> +RGMII1 RGMII2 RMII1 RMII2 SD1 SPI1 SPI1DEBUG SPI1PASSTHRU TIMER4 TIMER5 TIMER6
> +TIMER7 TIMER8 VGABIOSROM
> +
>
> Examples:
>
> diff --git a/drivers/pinctrl/aspeed/pinctrl-aspeed-g5.c b/drivers/pinctrl/aspeed/pinctrl-aspeed-g5.c
> index 235d929e74fd..c8c72e8259d3 100644
> --- a/drivers/pinctrl/aspeed/pinctrl-aspeed-g5.c
> +++ b/drivers/pinctrl/aspeed/pinctrl-aspeed-g5.c
> @@ -186,24 +186,84 @@ MS_PIN_DECL(C20, GPIOE1, NDCD3, GPIE0OUT);
>
> FUNC_GROUP_DECL(GPIE0, B20, C20);
>
> -#define SPI1_DESC SIG_DESC_SET(HW_STRAP1, 13)
> +#define SPI1_DESC { HW_STRAP1, GENMASK(13, 12), 1, 0 }
> +#define SPI1DEBUG_DESC { HW_STRAP1, GENMASK(13, 12), 2, 0 }
> +#define SPI1PASSTHRU_DESC { HW_STRAP1, GENMASK(13, 12), 3, 0 }
> +
> #define C18 64
> -SIG_EXPR_LIST_DECL_SINGLE(SYSCS, SPI1, COND1, SPI1_DESC);
> +SIG_EXPR_DECL(SYSCS, SPI1DEBUG, COND1, SPI1DEBUG_DESC);
> +SIG_EXPR_DECL(SYSCS, SPI1PASSTHRU, COND1, SPI1PASSTHRU_DESC);
> +SIG_EXPR_LIST_DECL_DUAL(SYSCS, SPI1DEBUG, SPI1PASSTHRU);
> SS_PIN_DECL(C18, GPIOI0, SYSCS);
>
> #define E15 65
> -SIG_EXPR_LIST_DECL_SINGLE(SYSCK, SPI1, COND1, SPI1_DESC);
> +SIG_EXPR_DECL(SYSCK, SPI1DEBUG, COND1, SPI1DEBUG_DESC);
> +SIG_EXPR_DECL(SYSCK, SPI1PASSTHRU, COND1, SPI1PASSTHRU_DESC);
> +SIG_EXPR_LIST_DECL_DUAL(SYSCK, SPI1DEBUG, SPI1PASSTHRU);
> SS_PIN_DECL(E15, GPIOI1, SYSCK);
>
> -#define A14 66
> -SIG_EXPR_LIST_DECL_SINGLE(SYSMOSI, SPI1, COND1, SPI1_DESC);
> -SS_PIN_DECL(A14, GPIOI2, SYSMOSI);
> +#define B16 66
> +SIG_EXPR_DECL(SYSMOSI, SPI1DEBUG, COND1, SPI1DEBUG_DESC);
> +SIG_EXPR_DECL(SYSMOSI, SPI1PASSTHRU, COND1, SPI1PASSTHRU_DESC);
> +SIG_EXPR_LIST_DECL_DUAL(SYSMOSI, SPI1DEBUG, SPI1PASSTHRU);
> +SS_PIN_DECL(B16, GPIOI2, SYSMOSI);
>
> #define C16 67
> -SIG_EXPR_LIST_DECL_SINGLE(SYSMISO, SPI1, COND1, SPI1_DESC);
> +SIG_EXPR_DECL(SYSMISO, SPI1DEBUG, COND1, SPI1DEBUG_DESC);
> +SIG_EXPR_DECL(SYSMISO, SPI1PASSTHRU, COND1, SPI1PASSTHRU_DESC);
> +SIG_EXPR_LIST_DECL_DUAL(SYSMISO, SPI1DEBUG, SPI1PASSTHRU);
> SS_PIN_DECL(C16, GPIOI3, SYSMISO);
>
> -FUNC_GROUP_DECL(SPI1, C18, E15, A14, C16);
> +#define VB_DESC SIG_DESC_SET(HW_STRAP1, 5)
> +
> +#define B15 68
> +SIG_EXPR_DECL(SPI1CS0, SPI1, COND1, SPI1_DESC);
> +SIG_EXPR_DECL(SPI1CS0, SPI1DEBUG, COND1, SPI1DEBUG_DESC);
> +SIG_EXPR_DECL(SPI1CS0, SPI1PASSTHRU, COND1, SPI1PASSTHRU_DESC);
> +SIG_EXPR_LIST_DECL(SPI1CS0, SIG_EXPR_PTR(SPI1CS0, SPI1),
> + SIG_EXPR_PTR(SPI1CS0, SPI1DEBUG),
> + SIG_EXPR_PTR(SPI1CS0, SPI1PASSTHRU));
> +SIG_EXPR_LIST_DECL_SINGLE(VBCS, VGABIOSROM, COND1, VB_DESC);
> +MS_PIN_DECL(B15, GPIOI4, SPI1CS0, VBCS);
> +
> +#define C15 69
> +SIG_EXPR_DECL(SPI1CK, SPI1, COND1, SPI1_DESC);
> +SIG_EXPR_DECL(SPI1CK, SPI1DEBUG, COND1, SPI1DEBUG_DESC);
> +SIG_EXPR_DECL(SPI1CK, SPI1PASSTHRU, COND1, SPI1PASSTHRU_DESC);
> +SIG_EXPR_LIST_DECL(SPI1CK, SIG_EXPR_PTR(SPI1CK, SPI1),
> + SIG_EXPR_PTR(SPI1CK, SPI1DEBUG),
> + SIG_EXPR_PTR(SPI1CK, SPI1PASSTHRU));
> +SIG_EXPR_LIST_DECL_SINGLE(VBCK, VGABIOSROM, COND1, VB_DESC);
> +MS_PIN_DECL(C15, GPIOI5, SPI1CK, VBCK);
> +
> +#define A14 70
> +SIG_EXPR_DECL(SPI1MOSI, SPI1, COND1, SPI1_DESC);
> +SIG_EXPR_DECL(SPI1MOSI, SPI1DEBUG, COND1, SPI1DEBUG_DESC);
> +SIG_EXPR_DECL(SPI1MOSI, SPI1PASSTHRU, COND1, SPI1PASSTHRU_DESC);
> +SIG_EXPR_LIST_DECL(SPI1MOSI, SIG_EXPR_PTR(SPI1MOSI, SPI1),
> + SIG_EXPR_PTR(SPI1MOSI, SPI1DEBUG),
> + SIG_EXPR_PTR(SPI1MOSI, SPI1PASSTHRU));
> +SIG_EXPR_LIST_DECL_SINGLE(VBMOSI, VGABIOSROM, COND1, VB_DESC);
> +MS_PIN_DECL(A14, GPIOI6, SPI1MOSI, VBMOSI);
> +
> +#define A15 71
> +SIG_EXPR_DECL(SPI1MISO, SPI1, COND1, SPI1_DESC);
> +SIG_EXPR_DECL(SPI1MISO, SPI1DEBUG, COND1, SPI1DEBUG_DESC);
> +SIG_EXPR_DECL(SPI1MISO, SPI1PASSTHRU, COND1, SPI1PASSTHRU_DESC);
> +SIG_EXPR_LIST_DECL(SPI1MISO, SIG_EXPR_PTR(SPI1MISO, SPI1),
> + SIG_EXPR_PTR(SPI1MISO, SPI1DEBUG),
> + SIG_EXPR_PTR(SPI1MISO, SPI1PASSTHRU));
> +SIG_EXPR_LIST_DECL_SINGLE(VBMISO, VGABIOSROM, COND1, VB_DESC);
> +MS_PIN_DECL(A15, GPIOI7, SPI1MISO, VBMISO);
> +
> +FUNC_GROUP_DECL(SPI1, B15, C15, A14, A15);
> +FUNC_GROUP_DECL(SPI1DEBUG, C18, E15, B16, C16, B15, C15, A14, A15);
> +FUNC_GROUP_DECL(SPI1PASSTHRU, C18, E15, B16, C16, B15, C15, A14, A15);
> +FUNC_GROUP_DECL(VGABIOSROM, B15, C15, A14, A15);
> +
> +#define R2 72
> +SIG_EXPR_LIST_DECL_SINGLE(SGPMCK, SGPM, SIG_DESC_SET(SCU84, 8));
> +SS_PIN_DECL(R2, GPIOJ0, SGPMCK);
>
> #define L2 73
> SIG_EXPR_LIST_DECL_SINGLE(SGPMLD, SGPM, SIG_DESC_SET(SCU84, 9));
> @@ -580,6 +640,7 @@ static struct pinctrl_pin_desc aspeed_g5_pins[ASPEED_G5_NR_PINS] = {
> ASPEED_PINCTRL_PIN(A12),
> ASPEED_PINCTRL_PIN(A13),
> ASPEED_PINCTRL_PIN(A14),
> + ASPEED_PINCTRL_PIN(A15),
> ASPEED_PINCTRL_PIN(A2),
> ASPEED_PINCTRL_PIN(A3),
> ASPEED_PINCTRL_PIN(A4),
> @@ -592,6 +653,8 @@ static struct pinctrl_pin_desc aspeed_g5_pins[ASPEED_G5_NR_PINS] = {
> ASPEED_PINCTRL_PIN(B12),
> ASPEED_PINCTRL_PIN(B13),
> ASPEED_PINCTRL_PIN(B14),
> + ASPEED_PINCTRL_PIN(B15),
> + ASPEED_PINCTRL_PIN(B16),
> ASPEED_PINCTRL_PIN(B2),
> ASPEED_PINCTRL_PIN(B20),
> ASPEED_PINCTRL_PIN(B3),
> @@ -603,6 +666,7 @@ static struct pinctrl_pin_desc aspeed_g5_pins[ASPEED_G5_NR_PINS] = {
> ASPEED_PINCTRL_PIN(C12),
> ASPEED_PINCTRL_PIN(C13),
> ASPEED_PINCTRL_PIN(C14),
> + ASPEED_PINCTRL_PIN(C15),
> ASPEED_PINCTRL_PIN(C16),
> ASPEED_PINCTRL_PIN(C18),
> ASPEED_PINCTRL_PIN(C2),
> @@ -691,11 +755,14 @@ static const struct aspeed_pin_group aspeed_g5_groups[] = {
> ASPEED_PINCTRL_GROUP(RMII2),
> ASPEED_PINCTRL_GROUP(SD1),
> ASPEED_PINCTRL_GROUP(SPI1),
> + ASPEED_PINCTRL_GROUP(SPI1DEBUG),
> + ASPEED_PINCTRL_GROUP(SPI1PASSTHRU),
> ASPEED_PINCTRL_GROUP(TIMER4),
> ASPEED_PINCTRL_GROUP(TIMER5),
> ASPEED_PINCTRL_GROUP(TIMER6),
> ASPEED_PINCTRL_GROUP(TIMER7),
> ASPEED_PINCTRL_GROUP(TIMER8),
> + ASPEED_PINCTRL_GROUP(VGABIOSROM),
> };
>
> static const struct aspeed_pin_function aspeed_g5_functions[] = {
> @@ -733,11 +800,14 @@ static const struct aspeed_pin_function aspeed_g5_functions[] = {
> ASPEED_PINCTRL_FUNC(RMII2),
> ASPEED_PINCTRL_FUNC(SD1),
> ASPEED_PINCTRL_FUNC(SPI1),
> + ASPEED_PINCTRL_FUNC(SPI1DEBUG),
> + ASPEED_PINCTRL_FUNC(SPI1PASSTHRU),
> ASPEED_PINCTRL_FUNC(TIMER4),
> ASPEED_PINCTRL_FUNC(TIMER5),
> ASPEED_PINCTRL_FUNC(TIMER6),
> ASPEED_PINCTRL_FUNC(TIMER7),
> ASPEED_PINCTRL_FUNC(TIMER8),
> + ASPEED_PINCTRL_FUNC(VGABIOSROM),
> };
>
> static struct aspeed_pinctrl_data aspeed_g5_pinctrl_data = {
> --
> git-series 0.8.10
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