#include <linux/platform_device.h>
#include <linux/reboot.h>
#include <linux/regmap.h>
-#include <dt-bindings/reset/oxsemi,ox820.h>
+
+/* bit numbers of reset control register */
+#define OX820_SYS_CTRL_RST_SCU 0
+#define OX820_SYS_CTRL_RST_COPRO 1
+#define OX820_SYS_CTRL_RST_ARM0 2
+#define OX820_SYS_CTRL_RST_ARM1 3
+#define OX820_SYS_CTRL_RST_USBHS 4
+#define OX820_SYS_CTRL_RST_USBHSPHYA 5
+#define OX820_SYS_CTRL_RST_MACA 6
+#define OX820_SYS_CTRL_RST_MAC OX820_SYS_CTRL_RST_MACA
+#define OX820_SYS_CTRL_RST_PCIEA 7
+#define OX820_SYS_CTRL_RST_SGDMA 8
+#define OX820_SYS_CTRL_RST_CIPHER 9
+#define OX820_SYS_CTRL_RST_DDR 10
+#define OX820_SYS_CTRL_RST_SATA 11
+#define OX820_SYS_CTRL_RST_SATA_LINK 12
+#define OX820_SYS_CTRL_RST_SATA_PHY 13
+#define OX820_SYS_CTRL_RST_PCIEPHY 14
+#define OX820_SYS_CTRL_RST_STATIC 15
+#define OX820_SYS_CTRL_RST_GPIO 16
+#define OX820_SYS_CTRL_RST_UART1 17
+#define OX820_SYS_CTRL_RST_UART2 18
+#define OX820_SYS_CTRL_RST_MISC 19
+#define OX820_SYS_CTRL_RST_I2S 20
+#define OX820_SYS_CTRL_RST_SD 21
+#define OX820_SYS_CTRL_RST_MACB 22
+#define OX820_SYS_CTRL_RST_PCIEB 23
+#define OX820_SYS_CTRL_RST_VIDEO 24
+#define OX820_SYS_CTRL_RST_DDR_PHY 25
+#define OX820_SYS_CTRL_RST_USBHSPHYB 26
+#define OX820_SYS_CTRL_RST_USBDEV 27
+#define OX820_SYS_CTRL_RST_ARMDBG 29
+#define OX820_SYS_CTRL_RST_PLLA 30
+#define OX820_SYS_CTRL_RST_PLLB 31
/* bit numbers of clock control register */
-#define SYS_CTRL_CLK_COPRO 0
-#define SYS_CTRL_CLK_DMA 1
-#define SYS_CTRL_CLK_CIPHER 2
-#define SYS_CTRL_CLK_SD 3
-#define SYS_CTRL_CLK_SATA 4
-#define SYS_CTRL_CLK_I2S 5
-#define SYS_CTRL_CLK_USBHS 6
-#define SYS_CTRL_CLK_MACA 7
-#define SYS_CTRL_CLK_MAC SYS_CTRL_CLK_MACA
-#define SYS_CTRL_CLK_PCIEA 8
-#define SYS_CTRL_CLK_STATIC 9
-#define SYS_CTRL_CLK_MACB 10
-#define SYS_CTRL_CLK_PCIEB 11
-#define SYS_CTRL_CLK_REF600 12
-#define SYS_CTRL_CLK_USBDEV 13
-#define SYS_CTRL_CLK_DDR 14
-#define SYS_CTRL_CLK_DDRPHY 15
-#define SYS_CTRL_CLK_DDRCK 16
+#define OX820_SYS_CTRL_CLK_COPRO 0
+#define OX820_SYS_CTRL_CLK_DMA 1
+#define OX820_SYS_CTRL_CLK_CIPHER 2
+#define OX820_SYS_CTRL_CLK_SD 3
+#define OX820_SYS_CTRL_CLK_SATA 4
+#define OX820_SYS_CTRL_CLK_I2S 5
+#define OX820_SYS_CTRL_CLK_USBHS 6
+#define OX820_SYS_CTRL_CLK_MACA 7
+#define OX820_SYS_CTRL_CLK_MAC OX820_SYS_CTRL_CLK_MACA
+#define OX820_SYS_CTRL_CLK_PCIEA 8
+#define OX820_SYS_CTRL_CLK_STATIC 9
+#define OX820_SYS_CTRL_CLK_MACB 10
+#define OX820_SYS_CTRL_CLK_PCIEB 11
+#define OX820_SYS_CTRL_CLK_REF600 12
+#define OX820_SYS_CTRL_CLK_USBDEV 13
+#define OX820_SYS_CTRL_CLK_DDR 14
+#define OX820_SYS_CTRL_CLK_DDRPHY 15
+#define OX820_SYS_CTRL_CLK_DDRCK 16
/* Regmap offsets */
-#define CLK_SET_REGOFFSET 0x2c
-#define CLK_CLR_REGOFFSET 0x30
-#define RST_SET_REGOFFSET 0x34
-#define RST_CLR_REGOFFSET 0x38
-#define SECONDARY_SEL_REGOFFSET 0x14
-#define TERTIARY_SEL_REGOFFSET 0x8c
-#define QUATERNARY_SEL_REGOFFSET 0x94
-#define DEBUG_SEL_REGOFFSET 0x9c
-#define ALTERNATIVE_SEL_REGOFFSET 0xa4
-#define PULLUP_SEL_REGOFFSET 0xac
-#define SEC_SECONDARY_SEL_REGOFFSET 0x100014
-#define SEC_TERTIARY_SEL_REGOFFSET 0x10008c
-#define SEC_QUATERNARY_SEL_REGOFFSET 0x100094
-#define SEC_DEBUG_SEL_REGOFFSET 0x10009c
-#define SEC_ALTERNATIVE_SEL_REGOFFSET 0x1000a4
-#define SEC_PULLUP_SEL_REGOFFSET 0x1000ac
+#define OX820_CLK_SET_REGOFFSET 0x2c
+#define OX820_CLK_CLR_REGOFFSET 0x30
+#define OX820_RST_SET_REGOFFSET 0x34
+#define OX820_RST_CLR_REGOFFSET 0x38
+#define OX820_SECONDARY_SEL_REGOFFSET 0x14
+#define OX820_TERTIARY_SEL_REGOFFSET 0x8c
+#define OX820_QUATERNARY_SEL_REGOFFSET 0x94
+#define OX820_DEBUG_SEL_REGOFFSET 0x9c
+#define OX820_ALTERNATIVE_SEL_REGOFFSET 0xa4
+#define OX820_PULLUP_SEL_REGOFFSET 0xac
+#define OX820_SEC_SECONDARY_SEL_REGOFFSET 0x100014
+#define OX820_SEC_TERTIARY_SEL_REGOFFSET 0x10008c
+#define OX820_SEC_QUATERNARY_SEL_REGOFFSET 0x100094
+#define OX820_SEC_DEBUG_SEL_REGOFFSET 0x10009c
+#define OX820_SEC_ALTERNATIVE_SEL_REGOFFSET 0x1000a4
+#define OX820_SEC_PULLUP_SEL_REGOFFSET 0x1000ac
struct oxnas_restart_context {
struct notifier_block restart_handler;
};
-static int oxnas_restart_handle(struct notifier_block *this,
+static int ox820_restart_handle(struct notifier_block *this,
unsigned long mode, void *cmd)
{
struct oxnas_restart_context *ctx = container_of(this, struct
* Don't touch the DDR interface as things will come to an impromptu stop
* NB Possibly should be asserting reset for PLLB, but there are timing
* concerns here according to the docs */
- value = BIT(RESET_LEON) |
- BIT(RESET_USBHS) |
- BIT(RESET_USBPHYA) |
- BIT(RESET_MAC) |
- BIT(RESET_PCIEA) |
- BIT(RESET_SGDMA) |
- BIT(RESET_CIPHER) |
- BIT(RESET_SATA) |
- BIT(RESET_SATA_LINK) |
- BIT(RESET_SATA_PHY) |
- BIT(RESET_PCIEPHY) |
- BIT(RESET_NAND) |
- BIT(RESET_UART1) |
- BIT(RESET_UART2) |
- BIT(RESET_MISC) |
- BIT(RESET_I2S) |
- BIT(RESET_SD) |
- BIT(RESET_MAC_2) |
- BIT(RESET_PCIEB) |
- BIT(RESET_VIDEO) |
- BIT(RESET_USBPHYB) |
- BIT(RESET_USBDEV);
-
- regmap_write(ctx->sys_ctrl, RST_SET_REGOFFSET, value);
+ value = BIT(OX820_SYS_CTRL_RST_COPRO) |
+ BIT(OX820_SYS_CTRL_RST_USBHS) |
+ BIT(OX820_SYS_CTRL_RST_USBHSPHYA) |
+ BIT(OX820_SYS_CTRL_RST_MACA) |
+ BIT(OX820_SYS_CTRL_RST_PCIEA) |
+ BIT(OX820_SYS_CTRL_RST_SGDMA) |
+ BIT(OX820_SYS_CTRL_RST_CIPHER) |
+ BIT(OX820_SYS_CTRL_RST_SATA) |
+ BIT(OX820_SYS_CTRL_RST_SATA_LINK) |
+ BIT(OX820_SYS_CTRL_RST_SATA_PHY) |
+ BIT(OX820_SYS_CTRL_RST_PCIEPHY) |
+ BIT(OX820_SYS_CTRL_RST_STATIC) |
+ BIT(OX820_SYS_CTRL_RST_UART1) |
+ BIT(OX820_SYS_CTRL_RST_UART2) |
+ BIT(OX820_SYS_CTRL_RST_MISC) |
+ BIT(OX820_SYS_CTRL_RST_I2S) |
+ BIT(OX820_SYS_CTRL_RST_SD) |
+ BIT(OX820_SYS_CTRL_RST_MACB) |
+ BIT(OX820_SYS_CTRL_RST_PCIEB) |
+ BIT(OX820_SYS_CTRL_RST_VIDEO) |
+ BIT(OX820_SYS_CTRL_RST_USBHSPHYB) |
+ BIT(OX820_SYS_CTRL_RST_USBDEV);
+
+ regmap_write(ctx->sys_ctrl, OX820_RST_SET_REGOFFSET, value);
/* Release reset to cores as per power on defaults */
- regmap_write(ctx->sys_ctrl, RST_CLR_REGOFFSET, BIT(RESET_GPIO));
+ regmap_write(ctx->sys_ctrl, OX820_RST_CLR_REGOFFSET, BIT(OX820_SYS_CTRL_RST_GPIO));
/* Disable clocks to cores as per power-on defaults - must leave DDR
* related clocks enabled otherwise we'll stop rather abruptly. */
value =
- BIT(SYS_CTRL_CLK_COPRO) |
- BIT(SYS_CTRL_CLK_DMA) |
- BIT(SYS_CTRL_CLK_CIPHER) |
- BIT(SYS_CTRL_CLK_SD) |
- BIT(SYS_CTRL_CLK_SATA) |
- BIT(SYS_CTRL_CLK_I2S) |
- BIT(SYS_CTRL_CLK_USBHS) |
- BIT(SYS_CTRL_CLK_MAC) |
- BIT(SYS_CTRL_CLK_PCIEA) |
- BIT(SYS_CTRL_CLK_STATIC) |
- BIT(SYS_CTRL_CLK_MACB) |
- BIT(SYS_CTRL_CLK_PCIEB) |
- BIT(SYS_CTRL_CLK_REF600) |
- BIT(SYS_CTRL_CLK_USBDEV);
-
- regmap_write(ctx->sys_ctrl, CLK_CLR_REGOFFSET, value);
+ BIT(OX820_SYS_CTRL_CLK_COPRO) |
+ BIT(OX820_SYS_CTRL_CLK_DMA) |
+ BIT(OX820_SYS_CTRL_CLK_CIPHER) |
+ BIT(OX820_SYS_CTRL_CLK_SD) |
+ BIT(OX820_SYS_CTRL_CLK_SATA) |
+ BIT(OX820_SYS_CTRL_CLK_I2S) |
+ BIT(OX820_SYS_CTRL_CLK_USBHS) |
+ BIT(OX820_SYS_CTRL_CLK_MAC) |
+ BIT(OX820_SYS_CTRL_CLK_PCIEA) |
+ BIT(OX820_SYS_CTRL_CLK_STATIC) |
+ BIT(OX820_SYS_CTRL_CLK_MACB) |
+ BIT(OX820_SYS_CTRL_CLK_PCIEB) |
+ BIT(OX820_SYS_CTRL_CLK_REF600) |
+ BIT(OX820_SYS_CTRL_CLK_USBDEV);
+
+ regmap_write(ctx->sys_ctrl, OX820_CLK_CLR_REGOFFSET, value);
/* Enable clocks to cores as per power-on defaults */
/* Set sys-control pin mux'ing as per power-on defaults */
- regmap_write(ctx->sys_ctrl, SECONDARY_SEL_REGOFFSET, 0);
- regmap_write(ctx->sys_ctrl, TERTIARY_SEL_REGOFFSET, 0);
- regmap_write(ctx->sys_ctrl, QUATERNARY_SEL_REGOFFSET, 0);
- regmap_write(ctx->sys_ctrl, DEBUG_SEL_REGOFFSET, 0);
- regmap_write(ctx->sys_ctrl, ALTERNATIVE_SEL_REGOFFSET, 0);
- regmap_write(ctx->sys_ctrl, PULLUP_SEL_REGOFFSET, 0);
-
- regmap_write(ctx->sys_ctrl, SEC_SECONDARY_SEL_REGOFFSET, 0);
- regmap_write(ctx->sys_ctrl, SEC_TERTIARY_SEL_REGOFFSET, 0);
- regmap_write(ctx->sys_ctrl, SEC_QUATERNARY_SEL_REGOFFSET, 0);
- regmap_write(ctx->sys_ctrl, SEC_DEBUG_SEL_REGOFFSET, 0);
- regmap_write(ctx->sys_ctrl, SEC_ALTERNATIVE_SEL_REGOFFSET, 0);
- regmap_write(ctx->sys_ctrl, SEC_PULLUP_SEL_REGOFFSET, 0);
+ regmap_write(ctx->sys_ctrl, OX820_SECONDARY_SEL_REGOFFSET, 0);
+ regmap_write(ctx->sys_ctrl, OX820_TERTIARY_SEL_REGOFFSET, 0);
+ regmap_write(ctx->sys_ctrl, OX820_QUATERNARY_SEL_REGOFFSET, 0);
+ regmap_write(ctx->sys_ctrl, OX820_DEBUG_SEL_REGOFFSET, 0);
+ regmap_write(ctx->sys_ctrl, OX820_ALTERNATIVE_SEL_REGOFFSET, 0);
+ regmap_write(ctx->sys_ctrl, OX820_PULLUP_SEL_REGOFFSET, 0);
+
+ regmap_write(ctx->sys_ctrl, OX820_SEC_SECONDARY_SEL_REGOFFSET, 0);
+ regmap_write(ctx->sys_ctrl, OX820_SEC_TERTIARY_SEL_REGOFFSET, 0);
+ regmap_write(ctx->sys_ctrl, OX820_SEC_QUATERNARY_SEL_REGOFFSET, 0);
+ regmap_write(ctx->sys_ctrl, OX820_SEC_DEBUG_SEL_REGOFFSET, 0);
+ regmap_write(ctx->sys_ctrl, OX820_SEC_ALTERNATIVE_SEL_REGOFFSET, 0);
+ regmap_write(ctx->sys_ctrl, OX820_SEC_PULLUP_SEL_REGOFFSET, 0);
/* No need to save any state, as the ROM loader can determine whether
* reset is due to power cycling or programatic action, just hit the
* (self-clearing) CPU reset bit of the block reset register */
value =
- BIT(RESET_SCU) |
- BIT(RESET_ARM0) |
- BIT(RESET_ARM1);
+ BIT(OX820_SYS_CTRL_RST_SCU) |
+ BIT(OX820_SYS_CTRL_RST_ARM0) |
+ BIT(OX820_SYS_CTRL_RST_ARM1);
- regmap_write(ctx->sys_ctrl, RST_SET_REGOFFSET, value);
+ regmap_write(ctx->sys_ctrl, OX820_RST_SET_REGOFFSET, value);
pr_emerg("Unable to restart system\n");
return NOTIFY_DONE;
}
-static int oxnas_restart_probe(struct platform_device *pdev)
+static int ox820_restart_probe(struct platform_device *pdev)
{
struct oxnas_restart_context *ctx;
struct regmap *sys_ctrl;
struct device *dev = &pdev->dev;
int err = 0;
- sys_ctrl = syscon_regmap_lookup_by_compatible("oxsemi,ox820-sys-ctrl");
+ sys_ctrl = syscon_node_to_regmap(pdev->dev.of_node);
if (IS_ERR(sys_ctrl))
return PTR_ERR(sys_ctrl);
return -ENOMEM;
ctx->sys_ctrl = sys_ctrl;
- ctx->restart_handler.notifier_call = oxnas_restart_handle;
+ ctx->restart_handler.notifier_call = ox820_restart_handle;
ctx->restart_handler.priority = 192;
err = register_restart_handler(&ctx->restart_handler);
if (err)
return err;
}
-static const struct of_device_id oxnas_restart_of_match[] = {
+static const struct of_device_id ox820_restart_of_match[] = {
{ .compatible = "oxsemi,ox820-sys-ctrl" },
{}
};
-static struct platform_driver oxnas_restart_driver = {
- .probe = oxnas_restart_probe,
+static struct platform_driver ox820_restart_driver = {
+ .probe = ox820_restart_probe,
.driver = {
- .name = "oxnas-chip-reset",
- .of_match_table = oxnas_restart_of_match,
+ .name = "ox820-chip-reset",
+ .of_match_table = ox820_restart_of_match,
},
};
-builtin_platform_driver(oxnas_restart_driver);
+builtin_platform_driver(ox820_restart_driver);
projects / openwrt / staging / stintel.git / commitdiff