redonkable
/
remarkable-uboot
1
0
Fork 0
Code Releases Activity

zero-gravitas: Fix reboot loop 

Had an issue where the system would enter an
ethernal reboot loop. This was caused by a
glitch detection preventing proper power off.
This patch resets the glitch detection so that
the power off works as intended.

Jira: HW-5, HW-2
lars/power_fixes
Lars Ivar Miljeteig 2018-02-19 12:39:16 +01:00
parent 08d679d7fc
commit 0e53f1b338
1 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
board/reMarkable/zero-gravitas/zero-gravitas.c
View File

@ -119,6 +119,11 @@ DECLARE_GLOBAL_DATA_PTR;
#define SNVS_REG_LPCR 0x20CC038
#define SNVS_MASK_POWEROFF (BIT(5) | BIT(6) | BIT(0))
#define SNVS_LPSR_ADDR 0x020CC04C
#define SNVS_LPSR_CLEAR 0xFFFFFFFF
#define SNVS_LPPGDR_ADDR 0x020CC064
#define SVNS_LPPGDR_CONST 0x41736166
/* For the BQ24133 charger */
#define BQ24133_CHRGR_OK IMX_GPIO_NR(4, 1)
#define USB_POWER_UP IMX_GPIO_NR(4, 6)
@ -441,6 +446,10 @@ static void pfuze100_dump(struct pmic *p)
static void snvs_poweroff(void)
{
/* Clear glitch detect to ensure proper poweroff */
writel(SVNS_LPPGDR_CONST, SNVS_LPPGDR_ADDR);
writel(SNVS_LPSR_CLEAR, SNVS_LPSR_ADDR);
writel(SNVS_MASK_POWEROFF, SNVS_REG_LPCR);
while (1) {
udelay(500000);