Add voltage switching infrastructure for UHS-I modes by integrating both
regulator framework (for supply voltage control) and pinctrl state
switching (for pin drive strength optimization).
- Add regulator supply parsing and voltage switching callback
- Add optional pinctrl state switching between "default" (3.3V) and
"state_uhs" (1.8V) configurations
- Enable coordinated voltage and pin configuration changes for UHS modes
This provides complete voltage switching support while maintaining
backward compatibility when pinctrl states are not defined.
Tested-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
---
drivers/mmc/host/sdhci-of-k1.c | 58 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 58 insertions(+)
diff --git a/drivers/mmc/host/sdhci-of-k1.c b/drivers/mmc/host/sdhci-of-k1.c
index 0dd06fc19b8574ae1b00f7e5d09b7d4c87d06770..01afdadcf70796704b272ee5a31543afd5e01188 100644
--- a/drivers/mmc/host/sdhci-of-k1.c
+++ b/drivers/mmc/host/sdhci-of-k1.c
@@ -16,6 +16,7 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/reset.h>
+#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
#include "sdhci.h"
@@ -71,6 +72,9 @@
struct spacemit_sdhci_host {
struct clk *clk_core;
struct clk *clk_io;
+ struct pinctrl *pinctrl;
+ struct pinctrl_state *pinctrl_default;
+ struct pinctrl_state *pinctrl_uhs;
};
/* All helper functions will update clr/set while preserve rest bits */
@@ -219,6 +223,33 @@ static void spacemit_sdhci_pre_hs400_to_hs200(struct mmc_host *mmc)
SPACEMIT_SDHC_PHY_CTRL_REG);
}
+static void spacemit_sdhci_voltage_switch(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct spacemit_sdhci_host *sdhst = sdhci_pltfm_priv(pltfm_host);
+ struct mmc_ios *ios = &host->mmc->ios;
+ int ret;
+
+ if (!sdhst->pinctrl)
+ return;
+
+ if (ios->signal_voltage != MMC_SIGNAL_VOLTAGE_180) {
+ dev_warn(mmc_dev(host->mmc), "unsupported voltage %d\n",
+ ios->signal_voltage);
+ return;
+ }
+
+ if (sdhst->pinctrl_uhs) {
+ ret = pinctrl_select_state(sdhst->pinctrl, sdhst->pinctrl_uhs);
+ if (ret) {
+ dev_warn(mmc_dev(host->mmc),
+ "failed to select UHS pinctrl state: %d\n", ret);
+ return;
+ }
+ dev_dbg(mmc_dev(host->mmc), "switched to UHS pinctrl state\n");
+ }
+}
+
static inline int spacemit_sdhci_get_clocks(struct device *dev,
struct sdhci_pltfm_host *pltfm_host)
{
@@ -252,12 +283,37 @@ static inline int spacemit_sdhci_get_resets(struct device *dev)
return 0;
}
+static inline void spacemit_sdhci_get_pins(struct device *dev,
+ struct sdhci_pltfm_host *pltfm_host)
+{
+ struct spacemit_sdhci_host *sdhst = sdhci_pltfm_priv(pltfm_host);
+
+ sdhst->pinctrl = devm_pinctrl_get(dev);
+ if (IS_ERR(sdhst->pinctrl)) {
+ sdhst->pinctrl = NULL;
+ dev_dbg(dev, "pinctrl not available, voltage switching will work without it\n");
+ return;
+ }
+
+ sdhst->pinctrl_default = pinctrl_lookup_state(sdhst->pinctrl, "default");
+ if (IS_ERR(sdhst->pinctrl_default))
+ sdhst->pinctrl_default = NULL;
+
+ sdhst->pinctrl_uhs = pinctrl_lookup_state(sdhst->pinctrl, "state_uhs");
+ if (IS_ERR(sdhst->pinctrl_uhs))
+ sdhst->pinctrl_uhs = NULL;
+
+ dev_dbg(dev, "pinctrl setup: default=%p, uhs=%p\n",
+ sdhst->pinctrl_default, sdhst->pinctrl_uhs);
+}
+
static const struct sdhci_ops spacemit_sdhci_ops = {
.get_max_clock = spacemit_sdhci_clk_get_max_clock,
.reset = spacemit_sdhci_reset,
.set_bus_width = sdhci_set_bus_width,
.set_clock = spacemit_sdhci_set_clock,
.set_uhs_signaling = spacemit_sdhci_set_uhs_signaling,
+ .voltage_switch = spacemit_sdhci_voltage_switch,
};
static const struct sdhci_pltfm_data spacemit_sdhci_k1_pdata = {
@@ -324,6 +380,8 @@ static int spacemit_sdhci_probe(struct platform_device *pdev)
host->mmc->caps |= MMC_CAP_NEED_RSP_BUSY;
+ spacemit_sdhci_get_pins(dev, pltfm_host);
+
ret = spacemit_sdhci_get_clocks(dev, pltfm_host);
if (ret)
goto err_pltfm;
--
2.53.0On 16/03/2026 16:03, Iker Pedrosa wrote:
> Add voltage switching infrastructure for UHS-I modes by integrating both
> regulator framework (for supply voltage control) and pinctrl state
> switching (for pin drive strength optimization).
>
> - Add regulator supply parsing and voltage switching callback
> - Add optional pinctrl state switching between "default" (3.3V) and
> "state_uhs" (1.8V) configurations
> - Enable coordinated voltage and pin configuration changes for UHS modes
>
> This provides complete voltage switching support while maintaining
> backward compatibility when pinctrl states are not defined.
>
> Tested-by: Anand Moon <linux.amoon@gmail.com>
> Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
> ---
> drivers/mmc/host/sdhci-of-k1.c | 58 ++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 58 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci-of-k1.c b/drivers/mmc/host/sdhci-of-k1.c
> index 0dd06fc19b8574ae1b00f7e5d09b7d4c87d06770..01afdadcf70796704b272ee5a31543afd5e01188 100644
> --- a/drivers/mmc/host/sdhci-of-k1.c
> +++ b/drivers/mmc/host/sdhci-of-k1.c
> @@ -16,6 +16,7 @@
> #include <linux/of.h>
> #include <linux/of_device.h>
> #include <linux/reset.h>
> +#include <linux/pinctrl/consumer.h>
> #include <linux/platform_device.h>
>
> #include "sdhci.h"
> @@ -71,6 +72,9 @@
> struct spacemit_sdhci_host {
> struct clk *clk_core;
> struct clk *clk_io;
> + struct pinctrl *pinctrl;
> + struct pinctrl_state *pinctrl_default;
> + struct pinctrl_state *pinctrl_uhs;
> };
>
> /* All helper functions will update clr/set while preserve rest bits */
> @@ -219,6 +223,33 @@ static void spacemit_sdhci_pre_hs400_to_hs200(struct mmc_host *mmc)
> SPACEMIT_SDHC_PHY_CTRL_REG);
> }
>
> +static void spacemit_sdhci_voltage_switch(struct sdhci_host *host)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct spacemit_sdhci_host *sdhst = sdhci_pltfm_priv(pltfm_host);
> + struct mmc_ios *ios = &host->mmc->ios;
> + int ret;
> +
> + if (!sdhst->pinctrl)
> + return;
> +
> + if (ios->signal_voltage != MMC_SIGNAL_VOLTAGE_180) {
> + dev_warn(mmc_dev(host->mmc), "unsupported voltage %d\n",
> + ios->signal_voltage);
> + return;
> + }
In V2, I put "->voltage_switch() is called only for
ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180" by
which I meant that it does not allow the driver to
switch pin state back for 3.3V.
So you probably need an approach similar to the original
spacemit_sdhci_start_signal_voltage_switch() in:
https://lore.kernel.org/linux-mmc/20260302-orangepi-sd-card-uhs-v1-4-89c219973c0c@gmail.com/
> +
> + if (sdhst->pinctrl_uhs) {
> + ret = pinctrl_select_state(sdhst->pinctrl, sdhst->pinctrl_uhs);
> + if (ret) {
> + dev_warn(mmc_dev(host->mmc),
> + "failed to select UHS pinctrl state: %d\n", ret);
> + return;
> + }
> + dev_dbg(mmc_dev(host->mmc), "switched to UHS pinctrl state\n");
> + }
> +}
> +
> static inline int spacemit_sdhci_get_clocks(struct device *dev,
> struct sdhci_pltfm_host *pltfm_host)
> {
> @@ -252,12 +283,37 @@ static inline int spacemit_sdhci_get_resets(struct device *dev)
> return 0;
> }
>
> +static inline void spacemit_sdhci_get_pins(struct device *dev,
> + struct sdhci_pltfm_host *pltfm_host)
> +{
> + struct spacemit_sdhci_host *sdhst = sdhci_pltfm_priv(pltfm_host);
> +
> + sdhst->pinctrl = devm_pinctrl_get(dev);
> + if (IS_ERR(sdhst->pinctrl)) {
> + sdhst->pinctrl = NULL;
> + dev_dbg(dev, "pinctrl not available, voltage switching will work without it\n");
> + return;
> + }
> +
> + sdhst->pinctrl_default = pinctrl_lookup_state(sdhst->pinctrl, "default");
> + if (IS_ERR(sdhst->pinctrl_default))
> + sdhst->pinctrl_default = NULL;
> +
> + sdhst->pinctrl_uhs = pinctrl_lookup_state(sdhst->pinctrl, "state_uhs");
> + if (IS_ERR(sdhst->pinctrl_uhs))
> + sdhst->pinctrl_uhs = NULL;
> +
> + dev_dbg(dev, "pinctrl setup: default=%p, uhs=%p\n",
> + sdhst->pinctrl_default, sdhst->pinctrl_uhs);
> +}
> +
> static const struct sdhci_ops spacemit_sdhci_ops = {
> .get_max_clock = spacemit_sdhci_clk_get_max_clock,
> .reset = spacemit_sdhci_reset,
> .set_bus_width = sdhci_set_bus_width,
> .set_clock = spacemit_sdhci_set_clock,
> .set_uhs_signaling = spacemit_sdhci_set_uhs_signaling,
> + .voltage_switch = spacemit_sdhci_voltage_switch,
> };
>
> static const struct sdhci_pltfm_data spacemit_sdhci_k1_pdata = {
> @@ -324,6 +380,8 @@ static int spacemit_sdhci_probe(struct platform_device *pdev)
>
> host->mmc->caps |= MMC_CAP_NEED_RSP_BUSY;
>
> + spacemit_sdhci_get_pins(dev, pltfm_host);
> +
> ret = spacemit_sdhci_get_clocks(dev, pltfm_host);
> if (ret)
> goto err_pltfm;
>
El mar, 17 mar 2026 a las 12:28, Adrian Hunter
(<adrian.hunter@intel.com>) escribió:
>
> On 16/03/2026 16:03, Iker Pedrosa wrote:
> > Add voltage switching infrastructure for UHS-I modes by integrating both
> > regulator framework (for supply voltage control) and pinctrl state
> > switching (for pin drive strength optimization).
> >
> > - Add regulator supply parsing and voltage switching callback
> > - Add optional pinctrl state switching between "default" (3.3V) and
> > "state_uhs" (1.8V) configurations
> > - Enable coordinated voltage and pin configuration changes for UHS modes
> >
> > This provides complete voltage switching support while maintaining
> > backward compatibility when pinctrl states are not defined.
> >
> > Tested-by: Anand Moon <linux.amoon@gmail.com>
> > Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
> > ---
> > drivers/mmc/host/sdhci-of-k1.c | 58 ++++++++++++++++++++++++++++++++++++++++++
> > 1 file changed, 58 insertions(+)
> >
> > diff --git a/drivers/mmc/host/sdhci-of-k1.c b/drivers/mmc/host/sdhci-of-k1.c
> > index 0dd06fc19b8574ae1b00f7e5d09b7d4c87d06770..01afdadcf70796704b272ee5a31543afd5e01188 100644
> > --- a/drivers/mmc/host/sdhci-of-k1.c
> > +++ b/drivers/mmc/host/sdhci-of-k1.c
> > @@ -16,6 +16,7 @@
> > #include <linux/of.h>
> > #include <linux/of_device.h>
> > #include <linux/reset.h>
> > +#include <linux/pinctrl/consumer.h>
> > #include <linux/platform_device.h>
> >
> > #include "sdhci.h"
> > @@ -71,6 +72,9 @@
> > struct spacemit_sdhci_host {
> > struct clk *clk_core;
> > struct clk *clk_io;
> > + struct pinctrl *pinctrl;
> > + struct pinctrl_state *pinctrl_default;
> > + struct pinctrl_state *pinctrl_uhs;
> > };
> >
> > /* All helper functions will update clr/set while preserve rest bits */
> > @@ -219,6 +223,33 @@ static void spacemit_sdhci_pre_hs400_to_hs200(struct mmc_host *mmc)
> > SPACEMIT_SDHC_PHY_CTRL_REG);
> > }
> >
> > +static void spacemit_sdhci_voltage_switch(struct sdhci_host *host)
> > +{
> > + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> > + struct spacemit_sdhci_host *sdhst = sdhci_pltfm_priv(pltfm_host);
> > + struct mmc_ios *ios = &host->mmc->ios;
> > + int ret;
> > +
> > + if (!sdhst->pinctrl)
> > + return;
> > +
> > + if (ios->signal_voltage != MMC_SIGNAL_VOLTAGE_180) {
> > + dev_warn(mmc_dev(host->mmc), "unsupported voltage %d\n",
> > + ios->signal_voltage);
> > + return;
> > + }
>
> In V2, I put "->voltage_switch() is called only for
> ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180" by
> which I meant that it does not allow the driver to
> switch pin state back for 3.3V.
>
> So you probably need an approach similar to the original
> spacemit_sdhci_start_signal_voltage_switch() in:
>
> https://lore.kernel.org/linux-mmc/20260302-orangepi-sd-card-uhs-v1-4-89c219973c0c@gmail.com/
Thank you for the feedback. I want to make sure I understand this
point correctly to avoid going in circles.
In the v2 feedback , you mentioned that "->voltage_switch() is called
only for ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180", which I
understood to mean that this callback only needs to handle switching
to 1.8V. This meant that the changes I introduced for v3 don't manage
the switching to 3.3V.
Can you clarify if I should I revert to implementing
"->start_signal_voltage_switch()" instead, which would handle both
1.8V and 3.3V cases? Or is there a way to make the
"->voltage_switch()" approach work properly for both directions?
>
> > +
> > + if (sdhst->pinctrl_uhs) {
> > + ret = pinctrl_select_state(sdhst->pinctrl, sdhst->pinctrl_uhs);
> > + if (ret) {
> > + dev_warn(mmc_dev(host->mmc),
> > + "failed to select UHS pinctrl state: %d\n", ret);
> > + return;
> > + }
> > + dev_dbg(mmc_dev(host->mmc), "switched to UHS pinctrl state\n");
> > + }
> > +}
> > +
> > static inline int spacemit_sdhci_get_clocks(struct device *dev,
> > struct sdhci_pltfm_host *pltfm_host)
> > {
> > @@ -252,12 +283,37 @@ static inline int spacemit_sdhci_get_resets(struct device *dev)
> > return 0;
> > }
> >
> > +static inline void spacemit_sdhci_get_pins(struct device *dev,
> > + struct sdhci_pltfm_host *pltfm_host)
> > +{
> > + struct spacemit_sdhci_host *sdhst = sdhci_pltfm_priv(pltfm_host);
> > +
> > + sdhst->pinctrl = devm_pinctrl_get(dev);
> > + if (IS_ERR(sdhst->pinctrl)) {
> > + sdhst->pinctrl = NULL;
> > + dev_dbg(dev, "pinctrl not available, voltage switching will work without it\n");
> > + return;
> > + }
> > +
> > + sdhst->pinctrl_default = pinctrl_lookup_state(sdhst->pinctrl, "default");
> > + if (IS_ERR(sdhst->pinctrl_default))
> > + sdhst->pinctrl_default = NULL;
> > +
> > + sdhst->pinctrl_uhs = pinctrl_lookup_state(sdhst->pinctrl, "state_uhs");
> > + if (IS_ERR(sdhst->pinctrl_uhs))
> > + sdhst->pinctrl_uhs = NULL;
> > +
> > + dev_dbg(dev, "pinctrl setup: default=%p, uhs=%p\n",
> > + sdhst->pinctrl_default, sdhst->pinctrl_uhs);
> > +}
> > +
> > static const struct sdhci_ops spacemit_sdhci_ops = {
> > .get_max_clock = spacemit_sdhci_clk_get_max_clock,
> > .reset = spacemit_sdhci_reset,
> > .set_bus_width = sdhci_set_bus_width,
> > .set_clock = spacemit_sdhci_set_clock,
> > .set_uhs_signaling = spacemit_sdhci_set_uhs_signaling,
> > + .voltage_switch = spacemit_sdhci_voltage_switch,
> > };
> >
> > static const struct sdhci_pltfm_data spacemit_sdhci_k1_pdata = {
> > @@ -324,6 +380,8 @@ static int spacemit_sdhci_probe(struct platform_device *pdev)
> >
> > host->mmc->caps |= MMC_CAP_NEED_RSP_BUSY;
> >
> > + spacemit_sdhci_get_pins(dev, pltfm_host);
> > +
> > ret = spacemit_sdhci_get_clocks(dev, pltfm_host);
> > if (ret)
> > goto err_pltfm;
> >
>
On 20/03/2026 11:17, Iker Pedrosa wrote:
> El mar, 17 mar 2026 a las 12:28, Adrian Hunter
> (<adrian.hunter@intel.com>) escribió:
>>
>> On 16/03/2026 16:03, Iker Pedrosa wrote:
>>> Add voltage switching infrastructure for UHS-I modes by integrating both
>>> regulator framework (for supply voltage control) and pinctrl state
>>> switching (for pin drive strength optimization).
>>>
>>> - Add regulator supply parsing and voltage switching callback
>>> - Add optional pinctrl state switching between "default" (3.3V) and
>>> "state_uhs" (1.8V) configurations
>>> - Enable coordinated voltage and pin configuration changes for UHS modes
>>>
>>> This provides complete voltage switching support while maintaining
>>> backward compatibility when pinctrl states are not defined.
>>>
>>> Tested-by: Anand Moon <linux.amoon@gmail.com>
>>> Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
>>> ---
>>> drivers/mmc/host/sdhci-of-k1.c | 58 ++++++++++++++++++++++++++++++++++++++++++
>>> 1 file changed, 58 insertions(+)
>>>
>>> diff --git a/drivers/mmc/host/sdhci-of-k1.c b/drivers/mmc/host/sdhci-of-k1.c
>>> index 0dd06fc19b8574ae1b00f7e5d09b7d4c87d06770..01afdadcf70796704b272ee5a31543afd5e01188 100644
>>> --- a/drivers/mmc/host/sdhci-of-k1.c
>>> +++ b/drivers/mmc/host/sdhci-of-k1.c
>>> @@ -16,6 +16,7 @@
>>> #include <linux/of.h>
>>> #include <linux/of_device.h>
>>> #include <linux/reset.h>
>>> +#include <linux/pinctrl/consumer.h>
>>> #include <linux/platform_device.h>
>>>
>>> #include "sdhci.h"
>>> @@ -71,6 +72,9 @@
>>> struct spacemit_sdhci_host {
>>> struct clk *clk_core;
>>> struct clk *clk_io;
>>> + struct pinctrl *pinctrl;
>>> + struct pinctrl_state *pinctrl_default;
>>> + struct pinctrl_state *pinctrl_uhs;
>>> };
>>>
>>> /* All helper functions will update clr/set while preserve rest bits */
>>> @@ -219,6 +223,33 @@ static void spacemit_sdhci_pre_hs400_to_hs200(struct mmc_host *mmc)
>>> SPACEMIT_SDHC_PHY_CTRL_REG);
>>> }
>>>
>>> +static void spacemit_sdhci_voltage_switch(struct sdhci_host *host)
>>> +{
>>> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
>>> + struct spacemit_sdhci_host *sdhst = sdhci_pltfm_priv(pltfm_host);
>>> + struct mmc_ios *ios = &host->mmc->ios;
>>> + int ret;
>>> +
>>> + if (!sdhst->pinctrl)
>>> + return;
>>> +
>>> + if (ios->signal_voltage != MMC_SIGNAL_VOLTAGE_180) {
>>> + dev_warn(mmc_dev(host->mmc), "unsupported voltage %d\n",
>>> + ios->signal_voltage);
>>> + return;
>>> + }
>>
>> In V2, I put "->voltage_switch() is called only for
>> ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180" by
>> which I meant that it does not allow the driver to
>> switch pin state back for 3.3V.
>>
>> So you probably need an approach similar to the original
>> spacemit_sdhci_start_signal_voltage_switch() in:
>>
>> https://lore.kernel.org/linux-mmc/20260302-orangepi-sd-card-uhs-v1-4-89c219973c0c@gmail.com/
>
> Thank you for the feedback. I want to make sure I understand this
> point correctly to avoid going in circles.
>
> In the v2 feedback , you mentioned that "->voltage_switch() is called
> only for ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180", which I
> understood to mean that this callback only needs to handle switching
> to 1.8V. This meant that the changes I introduced for v3 don't manage
> the switching to 3.3V.
>
> Can you clarify if I should I revert to implementing
> "->start_signal_voltage_switch()" instead, which would handle both
> 1.8V and 3.3V cases?
Yes
Or is there a way to make the
> "->voltage_switch()" approach work properly for both directions?
>
>>
>>> +
>>> + if (sdhst->pinctrl_uhs) {
>>> + ret = pinctrl_select_state(sdhst->pinctrl, sdhst->pinctrl_uhs);
>>> + if (ret) {
>>> + dev_warn(mmc_dev(host->mmc),
>>> + "failed to select UHS pinctrl state: %d\n", ret);
>>> + return;
>>> + }
>>> + dev_dbg(mmc_dev(host->mmc), "switched to UHS pinctrl state\n");
>>> + }
>>> +}
>>> +
>>> static inline int spacemit_sdhci_get_clocks(struct device *dev,
>>> struct sdhci_pltfm_host *pltfm_host)
>>> {
>>> @@ -252,12 +283,37 @@ static inline int spacemit_sdhci_get_resets(struct device *dev)
>>> return 0;
>>> }
>>>
>>> +static inline void spacemit_sdhci_get_pins(struct device *dev,
>>> + struct sdhci_pltfm_host *pltfm_host)
>>> +{
>>> + struct spacemit_sdhci_host *sdhst = sdhci_pltfm_priv(pltfm_host);
>>> +
>>> + sdhst->pinctrl = devm_pinctrl_get(dev);
>>> + if (IS_ERR(sdhst->pinctrl)) {
>>> + sdhst->pinctrl = NULL;
>>> + dev_dbg(dev, "pinctrl not available, voltage switching will work without it\n");
>>> + return;
>>> + }
>>> +
>>> + sdhst->pinctrl_default = pinctrl_lookup_state(sdhst->pinctrl, "default");
>>> + if (IS_ERR(sdhst->pinctrl_default))
>>> + sdhst->pinctrl_default = NULL;
>>> +
>>> + sdhst->pinctrl_uhs = pinctrl_lookup_state(sdhst->pinctrl, "state_uhs");
>>> + if (IS_ERR(sdhst->pinctrl_uhs))
>>> + sdhst->pinctrl_uhs = NULL;
>>> +
>>> + dev_dbg(dev, "pinctrl setup: default=%p, uhs=%p\n",
>>> + sdhst->pinctrl_default, sdhst->pinctrl_uhs);
>>> +}
>>> +
>>> static const struct sdhci_ops spacemit_sdhci_ops = {
>>> .get_max_clock = spacemit_sdhci_clk_get_max_clock,
>>> .reset = spacemit_sdhci_reset,
>>> .set_bus_width = sdhci_set_bus_width,
>>> .set_clock = spacemit_sdhci_set_clock,
>>> .set_uhs_signaling = spacemit_sdhci_set_uhs_signaling,
>>> + .voltage_switch = spacemit_sdhci_voltage_switch,
>>> };
>>>
>>> static const struct sdhci_pltfm_data spacemit_sdhci_k1_pdata = {
>>> @@ -324,6 +380,8 @@ static int spacemit_sdhci_probe(struct platform_device *pdev)
>>>
>>> host->mmc->caps |= MMC_CAP_NEED_RSP_BUSY;
>>>
>>> + spacemit_sdhci_get_pins(dev, pltfm_host);
>>> +
>>> ret = spacemit_sdhci_get_clocks(dev, pltfm_host);
>>> if (ret)
>>> goto err_pltfm;
>>>
>>
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