[PATCH 3/4] ARM: at91: pm: Remove 2.5V regulator
From: <Ryan.Wanner@microchip.com>
Date: 2025-09-10 16:22:32
Also in:
linux-devicetree, linux-pm, lkml
Subsystem:
arm port, arm/microchip (at91) soc support, the rest · Maintainers:
Russell King, Nicolas Ferre, Alexandre Belloni, Claudiu Beznea, Linus Torvalds
From: Ryan Wanner <Ryan.Wanner@microchip.com> Remove 2.5V regulator since enabling and disabling this regulator is no longer supported. Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com> --- arch/arm/mach-at91/pm_suspend.S | 29 ----------------------------- include/soc/at91/sama7-sfrbu.h | 7 ------- 2 files changed, 36 deletions(-)
diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S
index 198236bdbbb3..36cae7b1a490 100644
--- a/arch/arm/mach-at91/pm_suspend.S
+++ b/arch/arm/mach-at91/pm_suspend.S@@ -87,29 +87,6 @@ tmp3 .req r6 .endm -/** - * Set state for 2.5V low power regulator - * @ena: 0 - disable regulator - * 1 - enable regulator - * - * Side effects: overwrites r7, r8, r9, r10 - */ - .macro at91_2_5V_reg_set_low_power ena -#ifdef CONFIG_SOC_SAMA7 - ldr r7, .sfrbu - mov r8, #\ena - ldr r9, [r7, #AT91_SFRBU_25LDOCR] - orr r9, r9, #AT91_SFRBU_25LDOCR_LP - cmp r8, #1 - beq lp_done_\ena - bic r9, r9, #AT91_SFRBU_25LDOCR_LP -lp_done_\ena: - ldr r10, =AT91_SFRBU_25LDOCR_LDOANAKEY - orr r9, r9, r10 - str r9, [r7, #AT91_SFRBU_25LDOCR] -#endif - .endm - /* * Set LPM * @ena: 0 - disable LPM
@@ -1055,9 +1032,6 @@ save_mck: at91_plla_disable - /* Enable low power mode for 2.5V regulator. */ - at91_2_5V_reg_set_low_power 1 - ldr tmp3, .pm_mode cmp tmp3, #AT91_PM_ULP1 beq ulp1_mode
@@ -1070,9 +1044,6 @@ ulp1_mode: b ulp_exit ulp_exit: - /* Disable low power mode for 2.5V regulator. */ - at91_2_5V_reg_set_low_power 0 - ldr pmc, .pmc_base at91_plla_enable
diff --git a/include/soc/at91/sama7-sfrbu.h b/include/soc/at91/sama7-sfrbu.h
index 76b740810d34..8cee48d1ae2c 100644
--- a/include/soc/at91/sama7-sfrbu.h
+++ b/include/soc/at91/sama7-sfrbu.h@@ -18,13 +18,6 @@ #define AT91_SFRBU_PSWBU_SOFTSWITCH (1 << 1) /* Power switch BU source selection */ #define AT91_SFRBU_PSWBU_CTRL (1 << 0) /* Power switch BU control */ -#define AT91_SFRBU_25LDOCR (0x0C) /* SFRBU 2.5V LDO Control Register */ -#define AT91_SFRBU_25LDOCR_LDOANAKEY (0x3B6E18 << 8) /* Specific value mandatory to allow writing of other register bits. */ -#define AT91_SFRBU_25LDOCR_STATE (1 << 3) /* LDOANA Switch On/Off Control */ -#define AT91_SFRBU_25LDOCR_LP (1 << 2) /* LDOANA Low-Power Mode Control */ -#define AT91_SFRBU_PD_VALUE_MSK (0x3) -#define AT91_SFRBU_25LDOCR_PD_VALUE(v) ((v) & AT91_SFRBU_PD_VALUE_MSK) /* LDOANA Pull-down value */ - #define AT91_FRBU_DDRPWR (0x10) /* SFRBU DDR Power Control Register */ #define AT91_FRBU_DDRPWR_STATE (1 << 0) /* DDR Power Mode State */
--
2.43.0