Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxx>
---
This is needed to get our regulators into hpm, to give enough power to our
sdhci cards to run at higher clockrates - e.g. hs200.
Documentation/devicetree/bindings/mmc/mmc.txt | 2 ++
drivers/mmc/core/core.c | 6 ++++++
drivers/mmc/core/host.c | 4 ++++
include/linux/mmc/host.h | 2 ++
4 files changed, 14 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt
index 0384fc3f64e8..05c8b4f59187 100644
--- a/Documentation/devicetree/bindings/mmc/mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/mmc.txt
@@ -47,6 +47,8 @@ Optional properties:
- mmc-hs400-1_2v: eMMC HS400 mode(1.2V I/O) is supported
- dsr: Value the card's (optional) Driver Stage Register (DSR) should be
programmed with. Valid range: [0 .. 0xffff].
+- vmmc-load: requested load for the vmmc regulator, in mA
+- vqmmc-load: requested load for the vqmmc regulator, in mA
*NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line
polarity properties, we have to fix the meaning of the "normal" and "inverted"
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 9ad73f30f744..0a8f828af59f 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1455,12 +1455,18 @@ int mmc_regulator_get_supply(struct mmc_host *mmc)
mmc->ocr_avail = ret;
else
dev_warn(dev, "Failed getting OCR mask: %d\n", ret);
+
+ if (mmc->supply.vmmc_load)
+ regulator_set_load(mmc->supply.vmmc, mmc->supply.vmmc_load);
}
if (IS_ERR(mmc->supply.vqmmc)) {
if (PTR_ERR(mmc->supply.vqmmc) == -EPROBE_DEFER)
return -EPROBE_DEFER;
dev_info(dev, "No vqmmc regulator found\n");
+ } else {
+ if (mmc->supply.vqmmc_load)
+ regulator_set_load(mmc->supply.vqmmc, mmc->supply.vqmmc_load);
}
return 0;
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 99a9c9011c50..136af25bef9d 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -475,6 +475,10 @@ int mmc_of_parse(struct mmc_host *host)
host->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH;
}
+ /* Parse regulator load requests */
+ of_property_read_u32(np, "vmmc-load", &host->supply.vmmc_load);
+ of_property_read_u32(np, "vqmmc-load", &host->supply.vqmmc_load);
+
/* Parse Write Protection */
ro_cap_invert = of_property_read_bool(np, "wp-inverted");
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 1369e54faeb7..e4e2a26bab41 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -197,6 +197,8 @@ struct mmc_pwrseq;
struct mmc_supply {
struct regulator *vmmc; /* Card power supply */
struct regulator *vqmmc; /* Optional Vccq supply */
+ u32 vmmc_load; /* Load request for vmmc */
+ u32 vqmmc_load; /* Load request for vqmmc */
};
struct mmc_host {
--
1.8.2.2
--
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