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Diffstat (limited to 'sys-kernel/boest-v5.0.15/raspberrypi/0171-rtc-rv3028-Add-backup-switchover-mode-support.patch')
-rw-r--r--sys-kernel/boest-v5.0.15/raspberrypi/0171-rtc-rv3028-Add-backup-switchover-mode-support.patch52
1 files changed, 52 insertions, 0 deletions
diff --git a/sys-kernel/boest-v5.0.15/raspberrypi/0171-rtc-rv3028-Add-backup-switchover-mode-support.patch b/sys-kernel/boest-v5.0.15/raspberrypi/0171-rtc-rv3028-Add-backup-switchover-mode-support.patch
new file mode 100644
index 00000000..c29e0302
--- /dev/null
+++ b/sys-kernel/boest-v5.0.15/raspberrypi/0171-rtc-rv3028-Add-backup-switchover-mode-support.patch
@@ -0,0 +1,52 @@
+From 19503b082f724f9c3cad42be80fd56133272c936 Mon Sep 17 00:00:00 2001
+From: Phil Howard <phil@gadgetoid.com>
+Date: Fri, 29 Mar 2019 10:53:14 +0000
+Subject: [PATCH 171/194] 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(+)
+
+diff --git a/drivers/rtc/rtc-rv3028.c b/drivers/rtc/rtc-rv3028.c
+index 06884ebb7a61..73d923f2a090 100644
+--- a/drivers/rtc/rtc-rv3028.c
++++ b/drivers/rtc/rtc-rv3028.c
+@@ -73,6 +73,7 @@
+
+ #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
+
+@@ -600,6 +601,7 @@ static int rv3028_probe(struct i2c_client *client)
+ struct rv3028_data *rv3028;
+ int ret, status;
+ u32 ohms;
++ u8 bsm;
+ struct nvmem_config nvmem_cfg = {
+ .name = "rv3028_nvram",
+ .word_size = 1,
+@@ -670,6 +672,21 @@ static int rv3028_probe(struct i2c_client *client)
+ 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)) {