Hi David,
Am Montag, 1. Februar 2016, 10:58:21 schrieb David Wu:
> The pinctrl of rk3399 is much different from other's,
> especially the 3bits of drive strength.
>
> Signed-off-by: David Wu <david.wu@xxxxxxxxxxxxxx>
> Reviewed-by: Heiko Stuebner <heiko@xxxxxxxxx>
looks nice now :-)
Thanks
Heiko
> ---
> Changes in v5:
> - merge the binding-doc-addition in one patch (Linus Heiko)
> - fix the comment of bit15 drive setting (Heiko)
>
> Change in v4: None
>
> Change in v3:
> - use switch-case to distinguish special 3bits width per pin (Heiko)
>
> Change in v2:
> - need spin_unlock_irqrestore for set drive default case
>
> .../bindings/pinctrl/rockchip,pinctrl.txt | 1 +
> drivers/pinctrl/pinctrl-rockchip.c | 369
> ++++++++++++++++++++- 2 files changed, 356 insertions(+), 14 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
> b/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt index
> 391ef4b..3bb9456 100644
> --- a/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
> +++ b/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
> @@ -22,6 +22,7 @@ Required properties for iomux controller:
> - compatible: one of "rockchip,rk2928-pinctrl",
> "rockchip,rk3066a-pinctrl" "rockchip,rk3066b-pinctrl",
> "rockchip,rk3188-pinctrl"
> "rockchip,rk3288-pinctrl", "rockchip,rk3368-pinctrl"
> + "rockchip,rk3399-pinctrl"
> - rockchip,grf: phandle referencing a syscon providing the
> "general register files"
>
> diff --git a/drivers/pinctrl/pinctrl-rockchip.c
> b/drivers/pinctrl/pinctrl-rockchip.c index a065112..d485f22 100644
> --- a/drivers/pinctrl/pinctrl-rockchip.c
> +++ b/drivers/pinctrl/pinctrl-rockchip.c
> @@ -64,6 +64,7 @@ enum rockchip_pinctrl_type {
> RK3188,
> RK3288,
> RK3368,
> + RK3399,
> };
>
> /**
> @@ -86,6 +87,31 @@ struct rockchip_iomux {
> };
>
> /**
> + * enum type index corresponding to rockchip_perpin_drv_list arrays index.
> + */
> +enum rockchip_pin_drv_type {
> + DRV_TYPE_IO_DEFAULT = 0,
> + DRV_TYPE_IO_1V8_OR_3V0,
> + DRV_TYPE_IO_1V8_ONLY,
> + DRV_TYPE_IO_1V8_3V0_AUTO,
> + DRV_TYPE_IO_3V3_ONLY,
> + DRV_TYPE_MAX
> +};
> +
> +/**
> + * @drv_type: drive strength variant using rockchip_perpin_drv_type
> + * @offset: if initialized to -1 it will be autocalculated, by specifying
> + * an initial offset value the relevant source offset can be reset
> + * to a new value for autocalculating the following drive strength
> + * registers. if used chips own cal_drv func instead to calculate
> + * registers offset, the variant could be ignored.
> + */
> +struct rockchip_drv {
> + enum rockchip_pin_drv_type drv_type;
> + int offset;
> +};
> +
> +/**
> * @reg_base: register base of the gpio bank
> * @reg_pull: optional separate register for additional pull settings
> * @clk: clock of the gpio bank
> @@ -96,6 +122,7 @@ struct rockchip_iomux {
> * @name: name of the bank
> * @bank_num: number of the bank, to account for holes
> * @iomux: array describing the 4 iomux sources of the bank
> + * @drv: array describing the 4 drive strength sources of the bank
> * @valid: are all necessary informations present
> * @of_node: dt node of this bank
> * @drvdata: common pinctrl basedata
> @@ -115,6 +142,7 @@ struct rockchip_pin_bank {
> char *name;
> u8 bank_num;
> struct rockchip_iomux iomux[4];
> + struct rockchip_drv drv[4];
> bool valid;
> struct device_node *of_node;
> struct rockchip_pinctrl *drvdata;
> @@ -151,6 +179,47 @@ struct rockchip_pin_bank {
> }, \
> }
>
> +#define PIN_BANK_DRV_FLAGS(id, pins, label, type0, type1, type2, type3) \
> + { \
> + .bank_num = id, \
> + .nr_pins = pins, \
> + .name = label, \
> + .iomux = { \
> + { .offset = -1 }, \
> + { .offset = -1 }, \
> + { .offset = -1 }, \
> + { .offset = -1 }, \
> + }, \
> + .drv = { \
> + { .drv_type = type0, .offset = -1 }, \
> + { .drv_type = type1, .offset = -1 }, \
> + { .drv_type = type2, .offset = -1 }, \
> + { .drv_type = type3, .offset = -1 }, \
> + }, \
> + }
> +
> +#define PIN_BANK_IOMUX_DRV_FLAGS_OFFSET(id, pins, label, iom0, iom1, \
> + iom2, iom3, drv0, drv1, drv2, \
> + drv3, offset0, offset1, \
> + offset2, offset3) \
> + { \
> + .bank_num = id, \
> + .nr_pins = pins, \
> + .name = label, \
> + .iomux = { \
> + { .type = iom0, .offset = -1 }, \
> + { .type = iom1, .offset = -1 }, \
> + { .type = iom2, .offset = -1 }, \
> + { .type = iom3, .offset = -1 }, \
> + }, \
> + .drv = { \
> + { .drv_type = drv0, .offset = offset0 }, \
> + { .drv_type = drv1, .offset = offset1 }, \
> + { .drv_type = drv2, .offset = offset2 }, \
> + { .drv_type = drv3, .offset = offset3 }, \
> + }, \
> + }
> +
> /**
> */
> struct rockchip_pin_ctrl {
> @@ -161,6 +230,9 @@ struct rockchip_pin_ctrl {
> enum rockchip_pinctrl_type type;
> int grf_mux_offset;
> int pmu_mux_offset;
> + int grf_drv_offset;
> + int pmu_drv_offset;
> +
> void (*pull_calc_reg)(struct rockchip_pin_bank *bank,
> int pin_num, struct regmap **regmap,
> int *reg, u8 *bit);
> @@ -676,7 +748,68 @@ static void rk3368_calc_drv_reg_and_bit(struct
> rockchip_pin_bank *bank, }
> }
>
> -static int rockchip_perpin_drv_list[] = { 2, 4, 8, 12 };
> +#define RK3399_PULL_GRF_OFFSET 0xe040
> +#define RK3399_PULL_PMU_OFFSET 0x40
> +#define RK3399_DRV_3BITS_PER_PIN 3
> +
> +static void rk3399_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
> + int pin_num, struct regmap **regmap,
> + int *reg, u8 *bit)
> +{
> + struct rockchip_pinctrl *info = bank->drvdata;
> +
> + /* The bank0:16 and bank1:32 pins are located in PMU */
> + if ((bank->bank_num == 0) || (bank->bank_num == 1)) {
> + *regmap = info->regmap_pmu;
> + *reg = RK3399_PULL_PMU_OFFSET;
> +
> + *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
> +
> + *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
> + *bit = pin_num % RK3188_PULL_PINS_PER_REG;
> + *bit *= RK3188_PULL_BITS_PER_PIN;
> + } else {
> + *regmap = info->regmap_base;
> + *reg = RK3399_PULL_GRF_OFFSET;
> +
> + /* correct the offset, as we're starting with the 3rd bank */
> + *reg -= 0x20;
> + *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
> + *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
> +
> + *bit = (pin_num % RK3188_PULL_PINS_PER_REG);
> + *bit *= RK3188_PULL_BITS_PER_PIN;
> + }
> +}
> +
> +static void rk3399_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
> + int pin_num, struct regmap **regmap,
> + int *reg, u8 *bit)
> +{
> + struct rockchip_pinctrl *info = bank->drvdata;
> + int drv_num = (pin_num / 8);
> +
> + /* The bank0:16 and bank1:32 pins are located in PMU */
> + if ((bank->bank_num == 0) || (bank->bank_num == 1))
> + *regmap = info->regmap_pmu;
> + else
> + *regmap = info->regmap_base;
> +
> + *reg = bank->drv[drv_num].offset;
> + if ((bank->drv[drv_num].drv_type == DRV_TYPE_IO_1V8_3V0_AUTO) ||
> + (bank->drv[drv_num].drv_type == DRV_TYPE_IO_3V3_ONLY))
> + *bit = (pin_num % 8) * 3;
> + else
> + *bit = (pin_num % 8) * 2;
> +}
> +
> +static int rockchip_perpin_drv_list[DRV_TYPE_MAX][8] = {
> + { 2, 4, 8, 12, -1, -1, -1, -1 },
> + { 3, 6, 9, 12, -1, -1, -1, -1 },
> + { 5, 10, 15, 20, -1, -1, -1, -1 },
> + { 4, 6, 8, 10, 12, 14, 16, 18 },
> + { 4, 7, 10, 13, 16, 19, 22, 26 }
> +};
>
> static int rockchip_get_drive_perpin(struct rockchip_pin_bank *bank,
> int pin_num)
> @@ -685,19 +818,74 @@ static int rockchip_get_drive_perpin(struct
> rockchip_pin_bank *bank, struct rockchip_pin_ctrl *ctrl = info->ctrl;
> struct regmap *regmap;
> int reg, ret;
> - u32 data;
> + u32 data, temp, rmask_bits;
> u8 bit;
> + int drv_type = bank->drv[pin_num / 8].drv_type;
>
> ctrl->drv_calc_reg(bank, pin_num, ®map, ®, &bit);
>
> + switch (drv_type) {
> + case DRV_TYPE_IO_1V8_3V0_AUTO:
> + case DRV_TYPE_IO_3V3_ONLY:
> + rmask_bits = RK3399_DRV_3BITS_PER_PIN;
> + switch (bit) {
> + case 0 ... 12:
> + /* regular case, nothing to do */
> + break;
> + case 15:
> + /*
> + * drive-strength offset is special, as it is
> + * spread over 2 registers
> + */
> + ret = regmap_read(regmap, reg, &data);
> + if (ret)
> + return ret;
> +
> + ret = regmap_read(regmap, reg + 0x4, &temp);
> + if (ret)
> + return ret;
> +
> + /*
> + * the bit data[15] contains bit 0 of the value
> + * while temp[1:0] contains bits 2 and 1
> + */
> + data >>= 15;
> + temp &= 0x3;
> + temp <<= 1;
> + data |= temp;
> +
> + return rockchip_perpin_drv_list[drv_type][data];
> + case 18 ... 21:
> + /* setting fully enclosed in the second register */
> + reg += 4;
> + bit -= 16;
> + break;
> + default:
> + dev_err(info->dev, "unsupported bit: %d for pinctrl drive type:
%d\n",
> + bit, drv_type);
> + return -EINVAL;
> + }
> +
> + break;
> + case DRV_TYPE_IO_DEFAULT:
> + case DRV_TYPE_IO_1V8_OR_3V0:
> + case DRV_TYPE_IO_1V8_ONLY:
> + rmask_bits = RK3288_DRV_BITS_PER_PIN;
> + break;
> + default:
> + dev_err(info->dev, "unsupported pinctrl drive type: %d\n",
> + drv_type);
> + return -EINVAL;
> + }
> +
> ret = regmap_read(regmap, reg, &data);
> if (ret)
> return ret;
>
> data >>= bit;
> - data &= (1 << RK3288_DRV_BITS_PER_PIN) - 1;
> + data &= (1 << rmask_bits) - 1;
>
> - return rockchip_perpin_drv_list[data];
> + return rockchip_perpin_drv_list[drv_type][data];
> }
>
> static int rockchip_set_drive_perpin(struct rockchip_pin_bank *bank,
> @@ -708,16 +896,23 @@ static int rockchip_set_drive_perpin(struct
> rockchip_pin_bank *bank, struct regmap *regmap;
> unsigned long flags;
> int reg, ret, i;
> - u32 data, rmask;
> + u32 data, rmask, rmask_bits, temp;
> u8 bit;
> + int drv_type = bank->drv[pin_num / 8].drv_type;
> +
> + dev_dbg(info->dev, "setting drive of GPIO%d-%d to %d\n",
> + bank->bank_num, pin_num, strength);
>
> ctrl->drv_calc_reg(bank, pin_num, ®map, ®, &bit);
>
> ret = -EINVAL;
> - for (i = 0; i < ARRAY_SIZE(rockchip_perpin_drv_list); i++) {
> - if (rockchip_perpin_drv_list[i] == strength) {
> + for (i = 0; i < ARRAY_SIZE(rockchip_perpin_drv_list[drv_type]); i++) {
> + if (rockchip_perpin_drv_list[drv_type][i] == strength) {
> ret = i;
> break;
> + } else if (rockchip_perpin_drv_list[drv_type][i] < 0) {
> + ret = rockchip_perpin_drv_list[drv_type][i];
> + break;
> }
> }
>
> @@ -729,8 +924,64 @@ static int rockchip_set_drive_perpin(struct
> rockchip_pin_bank *bank,
>
> spin_lock_irqsave(&bank->slock, flags);
>
> + switch (drv_type) {
> + case DRV_TYPE_IO_1V8_3V0_AUTO:
> + case DRV_TYPE_IO_3V3_ONLY:
> + rmask_bits = RK3399_DRV_3BITS_PER_PIN;
> + switch (bit) {
> + case 0 ... 12:
> + /* regular case, nothing to do */
> + break;
> + case 15:
> + /*
> + * drive-strength offset is special, as it is spread
> + * over 2 registers, the bit data[15] contains bit 0
> + * of the value while temp[1:0] contains bits 2 and 1
> + */
> + data = (ret & 0x1) << 15;
> + temp = (ret >> 0x1) & 0x3;
> +
> + rmask = BIT(15) | BIT(31);
> + data |= BIT(31);
> + ret = regmap_update_bits(regmap, reg, rmask, data);
> + if (ret) {
> + spin_unlock_irqrestore(&bank->slock, flags);
> + return ret;
> + }
> +
> + rmask = 0x3 | (0x3 << 16);
> + temp |= (0x3 << 16);
> + reg += 0x4;
> + ret = regmap_update_bits(regmap, reg, rmask, temp);
> +
> + spin_unlock_irqrestore(&bank->slock, flags);
> + return ret;
> + case 18 ... 21:
> + /* setting fully enclosed in the second register */
> + reg += 4;
> + bit -= 16;
> + break;
> + default:
> + spin_unlock_irqrestore(&bank->slock, flags);
> + dev_err(info->dev, "unsupported bit: %d for pinctrl drive type:
%d\n",
> + bit, drv_type);
> + return -EINVAL;
> + }
> + break;
> + case DRV_TYPE_IO_DEFAULT:
> + case DRV_TYPE_IO_1V8_OR_3V0:
> + case DRV_TYPE_IO_1V8_ONLY:
> + rmask_bits = RK3288_DRV_BITS_PER_PIN;
> + break;
> + default:
> + spin_unlock_irqrestore(&bank->slock, flags);
> + dev_err(info->dev, "unsupported pinctrl drive type: %d\n",
> + drv_type);
> + return -EINVAL;
> + }
> +
> /* enable the write to the equivalent lower bits */
> - data = ((1 << RK3288_DRV_BITS_PER_PIN) - 1) << (bit + 16);
> + data = ((1 << rmask_bits) - 1) << (bit + 16);
> rmask = data | (data >> 16);
> data |= (ret << bit);
>
> @@ -767,6 +1018,7 @@ static int rockchip_get_pull(struct rockchip_pin_bank
> *bank, int pin_num) case RK3188:
> case RK3288:
> case RK3368:
> + case RK3399:
> data >>= bit;
> data &= (1 << RK3188_PULL_BITS_PER_PIN) - 1;
>
> @@ -823,6 +1075,7 @@ static int rockchip_set_pull(struct rockchip_pin_bank
> *bank, case RK3188:
> case RK3288:
> case RK3368:
> + case RK3399:
> spin_lock_irqsave(&bank->slock, flags);
>
> /* enable the write to the equivalent lower bits */
> @@ -1003,6 +1256,7 @@ static bool rockchip_pinconf_pull_valid(struct
> rockchip_pin_ctrl *ctrl, case RK3188:
> case RK3288:
> case RK3368:
> + case RK3399:
> return (pull != PIN_CONFIG_BIAS_PULL_PIN_DEFAULT);
> }
>
> @@ -1860,7 +2114,7 @@ static struct rockchip_pin_ctrl
> *rockchip_pinctrl_get_soc_data( struct device_node *np;
> struct rockchip_pin_ctrl *ctrl;
> struct rockchip_pin_bank *bank;
> - int grf_offs, pmu_offs, i, j;
> + int grf_offs, pmu_offs, drv_grf_offs, drv_pmu_offs, i, j;
>
> match = of_match_node(rockchip_pinctrl_dt_match, node);
> ctrl = (struct rockchip_pin_ctrl *)match->data;
> @@ -1884,6 +2138,8 @@ static struct rockchip_pin_ctrl
> *rockchip_pinctrl_get_soc_data(
>
> grf_offs = ctrl->grf_mux_offset;
> pmu_offs = ctrl->pmu_mux_offset;
> + drv_pmu_offs = ctrl->pmu_drv_offset;
> + drv_grf_offs = ctrl->grf_drv_offset;
> bank = ctrl->pin_banks;
> for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
> int bank_pins = 0;
> @@ -1893,27 +2149,39 @@ static struct rockchip_pin_ctrl
> *rockchip_pinctrl_get_soc_data( bank->pin_base = ctrl->nr_pins;
> ctrl->nr_pins += bank->nr_pins;
>
> - /* calculate iomux offsets */
> + /* calculate iomux and drv offsets */
> for (j = 0; j < 4; j++) {
> struct rockchip_iomux *iom = &bank->iomux[j];
> + struct rockchip_drv *drv = &bank->drv[j];
> int inc;
>
> if (bank_pins >= bank->nr_pins)
> break;
>
> - /* preset offset value, set new start value */
> + /* preset iomux offset value, set new start value */
> if (iom->offset >= 0) {
> if (iom->type & IOMUX_SOURCE_PMU)
> pmu_offs = iom->offset;
> else
> grf_offs = iom->offset;
> - } else { /* set current offset */
> + } else { /* set current iomux offset */
> iom->offset = (iom->type & IOMUX_SOURCE_PMU) ?
> pmu_offs : grf_offs;
> }
>
> - dev_dbg(d->dev, "bank %d, iomux %d has offset 0x%x\n",
> - i, j, iom->offset);
> + /* preset drv offset value, set new start value */
> + if (drv->offset >= 0) {
> + if (iom->type & IOMUX_SOURCE_PMU)
> + drv_pmu_offs = drv->offset;
> + else
> + drv_grf_offs = drv->offset;
> + } else { /* set current drv offset */
> + drv->offset = (iom->type & IOMUX_SOURCE_PMU) ?
> + drv_pmu_offs : drv_grf_offs;
> + }
> +
> + dev_dbg(d->dev, "bank %d, iomux %d has iom_offset 0x%x drv_offset
> 0x%x\n", + i, j, iom->offset, drv->offset);
>
> /*
> * Increase offset according to iomux width.
> @@ -1925,6 +2193,21 @@ static struct rockchip_pin_ctrl
> *rockchip_pinctrl_get_soc_data( else
> grf_offs += inc;
>
> + /*
> + * Increase offset according to drv width.
> + * 3bit drive-strenth'es are spread over two registers.
> + */
> + if ((drv->drv_type == DRV_TYPE_IO_1V8_3V0_AUTO) ||
> + (drv->drv_type == DRV_TYPE_IO_3V3_ONLY))
> + inc = 8;
> + else
> + inc = 4;
> +
> + if (iom->type & IOMUX_SOURCE_PMU)
> + drv_pmu_offs += inc;
> + else
> + drv_grf_offs += inc;
> +
> bank_pins += 8;
> }
> }
> @@ -2208,6 +2491,62 @@ static struct rockchip_pin_ctrl rk3368_pin_ctrl = {
> .drv_calc_reg = rk3368_calc_drv_reg_and_bit,
> };
>
> +static struct rockchip_pin_bank rk3399_pin_banks[] = {
> + PIN_BANK_IOMUX_DRV_FLAGS_OFFSET(0, 32, "gpio0", IOMUX_SOURCE_PMU,
> + IOMUX_SOURCE_PMU,
> + IOMUX_SOURCE_PMU,
> + IOMUX_SOURCE_PMU,
> + DRV_TYPE_IO_1V8_ONLY,
> + DRV_TYPE_IO_1V8_ONLY,
> + DRV_TYPE_IO_DEFAULT,
> + DRV_TYPE_IO_DEFAULT,
> + 0x0,
> + 0x8,
> + -1,
> + -1
> + ),
> + PIN_BANK_IOMUX_DRV_FLAGS_OFFSET(1, 32, "gpio1", IOMUX_SOURCE_PMU,
> + IOMUX_SOURCE_PMU,
> + IOMUX_SOURCE_PMU,
> + IOMUX_SOURCE_PMU,
> + DRV_TYPE_IO_1V8_OR_3V0,
> + DRV_TYPE_IO_1V8_OR_3V0,
> + DRV_TYPE_IO_1V8_OR_3V0,
> + DRV_TYPE_IO_1V8_OR_3V0,
> + 0x20,
> + 0x28,
> + 0x30,
> + 0x38
> + ),
> + PIN_BANK_DRV_FLAGS(2, 32, "gpio2", DRV_TYPE_IO_1V8_OR_3V0,
> + DRV_TYPE_IO_1V8_OR_3V0,
> + DRV_TYPE_IO_1V8_ONLY,
> + DRV_TYPE_IO_1V8_ONLY
> + ),
> + PIN_BANK_DRV_FLAGS(3, 32, "gpio3", DRV_TYPE_IO_3V3_ONLY,
> + DRV_TYPE_IO_3V3_ONLY,
> + DRV_TYPE_IO_3V3_ONLY,
> + DRV_TYPE_IO_1V8_OR_3V0
> + ),
> + PIN_BANK_DRV_FLAGS(4, 32, "gpio4", DRV_TYPE_IO_1V8_OR_3V0,
> + DRV_TYPE_IO_1V8_3V0_AUTO,
> + DRV_TYPE_IO_1V8_OR_3V0,
> + DRV_TYPE_IO_1V8_OR_3V0
> + ),
> +};
> +
> +static struct rockchip_pin_ctrl rk3399_pin_ctrl = {
> + .pin_banks = rk3399_pin_banks,
> + .nr_banks = ARRAY_SIZE(rk3399_pin_banks),
> + .label = "RK3399-GPIO",
> + .type = RK3399,
> + .grf_mux_offset = 0xe000,
> + .pmu_mux_offset = 0x0,
> + .grf_drv_offset = 0xe100,
> + .pmu_drv_offset = 0x80,
> + .pull_calc_reg = rk3399_calc_pull_reg_and_bit,
> + .drv_calc_reg = rk3399_calc_drv_reg_and_bit,
> +};
>
> static const struct of_device_id rockchip_pinctrl_dt_match[] = {
> { .compatible = "rockchip,rk2928-pinctrl",
> @@ -2224,6 +2563,8 @@ static const struct of_device_id
> rockchip_pinctrl_dt_match[] = { .data = (void *)&rk3288_pin_ctrl },
> { .compatible = "rockchip,rk3368-pinctrl",
> .data = (void *)&rk3368_pin_ctrl },
> + { .compatible = "rockchip,rk3399-pinctrl",
> + .data = (void *)&rk3399_pin_ctrl },
> {},
> };
> MODULE_DEVICE_TABLE(of, rockchip_pinctrl_dt_match);
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Re: [PATCH v5] pinctrl: rockchip: add support for the rk3399
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- Subject: Re: [PATCH v5] pinctrl: rockchip: add support for the rk3399
- From: Heiko Stübner <heiko@xxxxxxxxx>
- Date: Mon, 01 Feb 2016 13:00:43 +0100
- In-reply-to: <1454295501-32165-1-git-send-email-david.wu@rock-chips.com>
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- [PATCH v5] pinctrl: rockchip: add support for the rk3399
- From: David Wu
- [PATCH v5] pinctrl: rockchip: add support for the rk3399
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