diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0366-rtc-rv3028-Add-backup-switchover-mode-support.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0366-rtc-rv3028-Add-backup-switchover-mode-support.patch | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0366-rtc-rv3028-Add-backup-switchover-mode-support.patch b/target/linux/brcm2708/patches-4.19/950-0366-rtc-rv3028-Add-backup-switchover-mode-support.patch new file mode 100644 index 0000000000..7eac71099d --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0366-rtc-rv3028-Add-backup-switchover-mode-support.patch @@ -0,0 +1,50 @@ +From fb4e195012c405a04b1a7a86e240ceada0c8aa65 Mon Sep 17 00:00:00 2001 +From: Phil Howard <phil@gadgetoid.com> +Date: Fri, 29 Mar 2019 10:53:14 +0000 +Subject: [PATCH] rtc: rv3028: Add backup switchover mode support + +Signed-off-by: Phil Howard <phil@pimoroni.com> +--- + drivers/rtc/rtc-rv3028.c | 17 +++++++++++++++++ + 1 file changed, 17 insertions(+) + +--- a/drivers/rtc/rtc-rv3028.c ++++ b/drivers/rtc/rtc-rv3028.c +@@ -74,6 +74,7 @@ + + #define RV3028_BACKUP_TCE BIT(5) + #define RV3028_BACKUP_TCR_MASK GENMASK(1,0) ++#define RV3028_BACKUP_BSM_MASK 0x0C + + #define OFFSET_STEP_PPT 953674 + +@@ -601,6 +602,7 @@ static int rv3028_probe(struct i2c_clien + struct rv3028_data *rv3028; + int ret, status; + u32 ohms; ++ u8 bsm; + struct nvmem_config nvmem_cfg = { + .name = "rv3028_nvram", + .word_size = 1, +@@ -671,6 +673,21 @@ static int rv3028_probe(struct i2c_clien + if (ret) + return ret; + ++ /* setup backup switchover mode */ ++ if (!device_property_read_u8(&client->dev, "backup-switchover-mode", ++ &bsm)) { ++ if (bsm <= 3) { ++ ret = regmap_update_bits(rv3028->regmap, RV3028_BACKUP, ++ RV3028_BACKUP_BSM_MASK, ++ (bsm & 0x03) << 2); ++ ++ if (ret) ++ return ret; ++ } else { ++ dev_warn(&client->dev, "invalid backup switchover mode value\n"); ++ } ++ } ++ + /* setup trickle charger */ + if (!device_property_read_u32(&client->dev, "trickle-resistor-ohms", + &ohms)) { |