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pinctrl: nomadik: db8500: Add mc0_a_2 pin group without direction control 

Some devices do not make use of the CMD0/DAT0/DAT2 direction control
pins of the MMC/SD card 0 interface. In this case we should leave
those pins unconfigured.

A similar case already exists for "mc1_a_1" vs "mc1_a_2"
when the MC1_FBCLK pin is not used.

Add a new "mc0_a_2" pin group which is equal to "mc0_a_1" except
with the MC0_CMDDIR, MC0_DAT0DIR and MC0_DAT2DIR pins removed.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20191117205439.239211-1-stephan@gerhold.net
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
alistair/sunxi64-5.5-dsi
Stephan Gerhold 2019-11-17 21:54:39 +01:00 committed by Linus Walleij
parent 08a96e43e3
commit 58afa801ef
1 changed files with 11 additions and 1 deletions
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12
drivers/pinctrl/nomadik/pinctrl-nomadik-db8500.c
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@ -391,6 +391,15 @@ static const unsigned mc0_a_1_pins[] = { DB8500_PIN_AC2, /* MC0_CMDDIR */
DB8500_PIN_AA2, /* MC0_DAT2 */
DB8500_PIN_AA1 /* MC0_DAT3 */
};
/* MMC/SD card 0 interface without CMD/DAT0/DAT2 direction control */
static const unsigned mc0_a_2_pins[] = { DB8500_PIN_AA3, /* MC0_FBCLK */
DB8500_PIN_AA4, /* MC0_CLK */
DB8500_PIN_AB2, /* MC0_CMD */
DB8500_PIN_Y4, /* MC0_DAT0 */
DB8500_PIN_Y2, /* MC0_DAT1 */
DB8500_PIN_AA2, /* MC0_DAT2 */
DB8500_PIN_AA1 /* MC0_DAT3 */
};
/* Often only 4 bits are used, then these are not needed (only used for MMC) */
static const unsigned mc0_dat47_a_1_pins[] = { DB8500_PIN_W2, /* MC0_DAT4 */
DB8500_PIN_W3, /* MC0_DAT5 */
@ -670,6 +679,7 @@ static const struct nmk_pingroup nmk_db8500_groups[] = {
DB8500_PIN_GROUP(msp0tfstck_a_1, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(msp0rfsrck_a_1, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(mc0_a_1, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(mc0_a_2, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(mc0_dat47_a_1, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(mc0dat31dir_a_1, NMK_GPIO_ALT_A),
DB8500_PIN_GROUP(msp1txrx_a_1, NMK_GPIO_ALT_A),
@ -828,7 +838,7 @@ DB8500_FUNC_GROUPS(ipi2c, "ipi2c_a_1", "ipi2c_a_2");
*/
DB8500_FUNC_GROUPS(msp0, "msp0txrx_a_1", "msp0tfstck_a_1", "msp0rfstck_a_1",
"msp0txrx_b_1", "msp0sck_b_1");
DB8500_FUNC_GROUPS(mc0, "mc0_a_1", "mc0_dat47_a_1", "mc0dat31dir_a_1");
DB8500_FUNC_GROUPS(mc0, "mc0_a_1", "mc0_a_2", "mc0_dat47_a_1", "mc0dat31dir_a_1");
/* MSP0 can swap RX/TX like MSP0 but has no SCK pin available */
DB8500_FUNC_GROUPS(msp1, "msp1txrx_a_1", "msp1_a_1", "msp1txrx_b_1");
DB8500_FUNC_GROUPS(lcdb, "lcdb_a_1");