From f2cea405f83da46b72098ea874fb3eefe185d312 Mon Sep 17 00:00:00 2001 From: Po-Yu Chuang Date: Wed, 23 Sep 2009 15:52:35 +0800 Subject: Add driver for FTRTC010 real time clock Signed-off-by: Po-Yu Chuang Edited commit message. Signed-off-by: Wolfgang Denk --- drivers/rtc/Makefile | 1 + drivers/rtc/ftrtc010.c | 124 +++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 125 insertions(+) create mode 100644 drivers/rtc/ftrtc010.c (limited to 'drivers') diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index ea7d899ea..772a49a90 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -40,6 +40,7 @@ COBJS-$(CONFIG_RTC_DS1556) += ds1556.o COBJS-$(CONFIG_RTC_DS164x) += ds164x.o COBJS-$(CONFIG_RTC_DS174x) += ds174x.o COBJS-$(CONFIG_RTC_DS3231) += ds3231.o +COBJS-$(CONFIG_RTC_FTRTC010) += ftrtc010.o COBJS-$(CONFIG_RTC_ISL1208) += isl1208.o COBJS-$(CONFIG_RTC_M41T11) += m41t11.o COBJS-$(CONFIG_RTC_M41T60) += m41t60.o diff --git a/drivers/rtc/ftrtc010.c b/drivers/rtc/ftrtc010.c new file mode 100644 index 000000000..c3c0bc2f5 --- /dev/null +++ b/drivers/rtc/ftrtc010.c @@ -0,0 +1,124 @@ +/* + * Faraday FTRTC010 Real Time Clock + * + * (C) Copyright 2009 Faraday Technology + * Po-Yu Chuang + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include +#include +#include +#include + +struct ftrtc010 { + unsigned int sec; /* 0x00 */ + unsigned int min; /* 0x04 */ + unsigned int hour; /* 0x08 */ + unsigned int day; /* 0x0c */ + unsigned int alarm_sec; /* 0x10 */ + unsigned int alarm_min; /* 0x14 */ + unsigned int alarm_hour; /* 0x18 */ + unsigned int record; /* 0x1c */ + unsigned int cr; /* 0x20 */ +}; + +/* + * RTC Control Register + */ +#define FTRTC010_CR_ENABLE (1 << 0) +#define FTRTC010_CR_INTERRUPT_SEC (1 << 1) /* per second irq */ +#define FTRTC010_CR_INTERRUPT_MIN (1 << 2) /* per minute irq */ +#define FTRTC010_CR_INTERRUPT_HR (1 << 3) /* per hour irq */ +#define FTRTC010_CR_INTERRUPT_DAY (1 << 4) /* per day irq */ + +static struct ftrtc010 *rtc = (struct ftrtc010 *)CONFIG_FTRTC010_BASE; + +static void ftrtc010_enable (void) +{ + writel (FTRTC010_CR_ENABLE, &rtc->cr); +} + +/* + * return current time in seconds + */ +static unsigned long ftrtc010_time (void) +{ + unsigned long day; + unsigned long hour; + unsigned long minute; + unsigned long second; + unsigned long second2; + + do { + second = readl (&rtc->sec); + day = readl (&rtc->day); + hour = readl (&rtc->hour); + minute = readl (&rtc->min); + second2 = readl (&rtc->sec); + } while (second != second2); + + return day * 24 * 60 * 60 + hour * 60 * 60 + minute * 60 + second; +} + +/* + * Get the current time from the RTC + */ + +int rtc_get (struct rtc_time *tmp) +{ + unsigned long now; + + debug ("%s(): record register: %x\n", + __func__, readl (&rtc->record)); + + now = ftrtc010_time () + readl (&rtc->record); + + to_tm (now, tmp); + + return 0; +} + +/* + * Set the RTC + */ +int rtc_set (struct rtc_time *tmp) +{ + unsigned long new; + unsigned long now; + + debug ("%s(): DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", + __func__, + tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday, + tmp->tm_hour, tmp->tm_min, tmp->tm_sec); + + new = mktime (tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_hour, + tmp->tm_min, tmp->tm_sec); + + now = ftrtc010_time (); + + debug ("%s(): write %lx to record register\n", __func__, new - now); + + writel (new - now, &rtc->record); + + return 0; +} + +void rtc_reset (void) +{ + debug ("%s()\n", __func__); + ftrtc010_enable (); +} -- cgit v1.2.3 From d394a7795027d96ca55799df40bd5c4a13dbeebe Mon Sep 17 00:00:00 2001 From: Jason McMullan Date: Fri, 9 Oct 2009 17:12:23 -0400 Subject: sf: new driver for Winbond W25X16/32/64 devices Signed-off-by: Jason McMullan Signed-off-by: Mike Frysinger --- drivers/mtd/spi/Makefile | 1 + drivers/mtd/spi/spi_flash.c | 5 + drivers/mtd/spi/spi_flash_internal.h | 1 + drivers/mtd/spi/winbond.c | 332 +++++++++++++++++++++++++++++++++++ 4 files changed, 339 insertions(+) create mode 100644 drivers/mtd/spi/winbond.c (limited to 'drivers') diff --git a/drivers/mtd/spi/Makefile b/drivers/mtd/spi/Makefile index e3e029280..4f11b3631 100644 --- a/drivers/mtd/spi/Makefile +++ b/drivers/mtd/spi/Makefile @@ -31,6 +31,7 @@ COBJS-$(CONFIG_SPI_FLASH_MACRONIX) += macronix.o COBJS-$(CONFIG_SPI_FLASH_SPANSION) += spansion.o COBJS-$(CONFIG_SPI_FLASH_SST) += sst.o COBJS-$(CONFIG_SPI_FLASH_STMICRO) += stmicro.o +COBJS-$(CONFIG_SPI_FLASH_WINBOND) += winbond.o COBJS-$(CONFIG_SPI_M95XXX) += eeprom_m95xxx.o COBJS := $(COBJS-y) diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 25346a4a1..612f819dc 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -140,6 +140,11 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, flash = spi_flash_probe_macronix(spi, idcode); break; #endif +#ifdef CONFIG_SPI_FLASH_WINBOND + case 0xef: + flash = spi_flash_probe_winbond(spi, idcode); + break; +#endif #ifdef CONFIG_SPI_FLASH_STMICRO case 0x20: flash = spi_flash_probe_stmicro(spi, idcode); diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h index 0612383c6..08546fbb0 100644 --- a/drivers/mtd/spi/spi_flash_internal.h +++ b/drivers/mtd/spi/spi_flash_internal.h @@ -49,3 +49,4 @@ struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode); struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode); struct spi_flash *spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode); struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 *idcode); +struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode); diff --git a/drivers/mtd/spi/winbond.c b/drivers/mtd/spi/winbond.c new file mode 100644 index 000000000..b8da92319 --- /dev/null +++ b/drivers/mtd/spi/winbond.c @@ -0,0 +1,332 @@ +/* + * Copyright 2008, Network Appliance Inc. + * Author: Jason McMullan netapp.com> + * Licensed under the GPL-2 or later. + */ + +#include +#include +#include + +#include "spi_flash_internal.h" + +/* M25Pxx-specific commands */ +#define CMD_W25_WREN 0x06 /* Write Enable */ +#define CMD_W25_WRDI 0x04 /* Write Disable */ +#define CMD_W25_RDSR 0x05 /* Read Status Register */ +#define CMD_W25_WRSR 0x01 /* Write Status Register */ +#define CMD_W25_READ 0x03 /* Read Data Bytes */ +#define CMD_W25_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */ +#define CMD_W25_PP 0x02 /* Page Program */ +#define CMD_W25_SE 0x20 /* Sector (4K) Erase */ +#define CMD_W25_BE 0xd8 /* Block (64K) Erase */ +#define CMD_W25_CE 0xc7 /* Chip Erase */ +#define CMD_W25_DP 0xb9 /* Deep Power-down */ +#define CMD_W25_RES 0xab /* Release from DP, and Read Signature */ + +#define WINBOND_ID_W25X16 0x3015 +#define WINBOND_ID_W25X32 0x3016 +#define WINBOND_ID_W25X64 0x3017 + +#define WINBOND_SR_WIP (1 << 0) /* Write-in-Progress */ + +struct winbond_spi_flash_params { + uint16_t id; + /* Log2 of page size in power-of-two mode */ + uint8_t l2_page_size; + uint16_t pages_per_sector; + uint16_t sectors_per_block; + uint8_t nr_blocks; + const char *name; +}; + +/* spi_flash needs to be first so upper layers can free() it */ +struct winbond_spi_flash { + struct spi_flash flash; + const struct winbond_spi_flash_params *params; +}; + +static inline struct winbond_spi_flash * +to_winbond_spi_flash(struct spi_flash *flash) +{ + return container_of(flash, struct winbond_spi_flash, flash); +} + +static const struct winbond_spi_flash_params winbond_spi_flash_table[] = { + { + .id = WINBOND_ID_W25X16, + .l2_page_size = 8, + .pages_per_sector = 16, + .sectors_per_block = 16, + .nr_blocks = 32, + .name = "W25X16", + }, + { + .id = WINBOND_ID_W25X32, + .l2_page_size = 8, + .pages_per_sector = 16, + .sectors_per_block = 16, + .nr_blocks = 64, + .name = "W25X32", + }, + { + .id = WINBOND_ID_W25X64, + .l2_page_size = 8, + .pages_per_sector = 16, + .sectors_per_block = 16, + .nr_blocks = 128, + .name = "W25X64", + }, +}; + +static int winbond_wait_ready(struct spi_flash *flash, unsigned long timeout) +{ + struct spi_slave *spi = flash->spi; + unsigned long timebase; + int ret; + u8 status; + u8 cmd[4] = { CMD_W25_RDSR, 0xff, 0xff, 0xff }; + + ret = spi_xfer(spi, 32, &cmd[0], NULL, SPI_XFER_BEGIN); + if (ret) { + debug("SF: Failed to send command %02x: %d\n", cmd, ret); + return ret; + } + + timebase = get_timer(0); + do { + ret = spi_xfer(spi, 8, NULL, &status, 0); + if (ret) { + debug("SF: Failed to get status for cmd %02x: %d\n", cmd, ret); + return -1; + } + + if ((status & WINBOND_SR_WIP) == 0) + break; + + } while (get_timer(timebase) < timeout); + + spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END); + + if ((status & WINBOND_SR_WIP) == 0) + return 0; + + debug("SF: Timed out on command %02x: %d\n", cmd, ret); + /* Timed out */ + return -1; +} + +/* + * Assemble the address part of a command for Winbond devices in + * non-power-of-two page size mode. + */ +static void winbond_build_address(struct winbond_spi_flash *stm, u8 *cmd, u32 offset) +{ + unsigned long page_addr; + unsigned long byte_addr; + unsigned long page_size; + unsigned int page_shift; + + /* + * The "extra" space per page is the power-of-two page size + * divided by 32. + */ + page_shift = stm->params->l2_page_size; + page_size = (1 << page_shift); + page_addr = offset / page_size; + byte_addr = offset % page_size; + + cmd[0] = page_addr >> (16 - page_shift); + cmd[1] = page_addr << (page_shift - 8) | (byte_addr >> 8); + cmd[2] = byte_addr; +} + +static int winbond_read_fast(struct spi_flash *flash, + u32 offset, size_t len, void *buf) +{ + struct winbond_spi_flash *stm = to_winbond_spi_flash(flash); + u8 cmd[5]; + + cmd[0] = CMD_READ_ARRAY_FAST; + winbond_build_address(stm, cmd + 1, offset); + cmd[4] = 0x00; + + return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len); +} + +static int winbond_write(struct spi_flash *flash, + u32 offset, size_t len, const void *buf) +{ + struct winbond_spi_flash *stm = to_winbond_spi_flash(flash); + unsigned long page_addr; + unsigned long byte_addr; + unsigned long page_size; + unsigned int page_shift; + size_t chunk_len; + size_t actual; + int ret; + u8 cmd[4]; + + page_shift = stm->params->l2_page_size; + page_size = (1 << page_shift); + page_addr = offset / page_size; + byte_addr = offset % page_size; + + ret = spi_claim_bus(flash->spi); + if (ret) { + debug("SF: Unable to claim SPI bus\n"); + return ret; + } + + for (actual = 0; actual < len; actual += chunk_len) { + chunk_len = min(len - actual, page_size - byte_addr); + + cmd[0] = CMD_W25_PP; + cmd[1] = page_addr >> (16 - page_shift); + cmd[2] = page_addr << (page_shift - 8) | (byte_addr >> 8); + cmd[3] = byte_addr; + debug("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %d\n", + buf + actual, + cmd[0], cmd[1], cmd[2], cmd[3], chunk_len); + + ret = spi_flash_cmd(flash->spi, CMD_W25_WREN, NULL, 0); + if (ret < 0) { + debug("SF: Enabling Write failed\n"); + goto out; + } + + ret = spi_flash_cmd_write(flash->spi, cmd, 4, + buf + actual, chunk_len); + if (ret < 0) { + debug("SF: Winbond Page Program failed\n"); + goto out; + } + + ret = winbond_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); + if (ret < 0) { + debug("SF: Winbond page programming timed out\n"); + goto out; + } + + page_addr++; + byte_addr = 0; + } + + debug("SF: Winbond: Successfully programmed %u bytes @ 0x%x\n", + len, offset); + ret = 0; + +out: + spi_release_bus(flash->spi); + return ret; +} + +int winbond_erase(struct spi_flash *flash, u32 offset, size_t len) +{ + struct winbond_spi_flash *stm = to_winbond_spi_flash(flash); + unsigned long sector_size; + unsigned int page_shift; + size_t actual; + int ret; + u8 cmd[4]; + + /* + * This function currently uses sector erase only. + * probably speed things up by using bulk erase + * when possible. + */ + + page_shift = stm->params->l2_page_size; + sector_size = (1 << page_shift) * stm->params->pages_per_sector; + + if (offset % sector_size || len % sector_size) { + debug("SF: Erase offset/length not multiple of sector size\n"); + return -1; + } + + len /= sector_size; + cmd[0] = CMD_W25_SE; + + ret = spi_claim_bus(flash->spi); + if (ret) { + debug("SF: Unable to claim SPI bus\n"); + return ret; + } + + for (actual = 0; actual < len; actual++) { + winbond_build_address(stm, &cmd[1], offset + actual * sector_size); + printf("Erase: %02x %02x %02x %02x\n", + cmd[0], cmd[1], cmd[2], cmd[3]); + + ret = spi_flash_cmd(flash->spi, CMD_W25_WREN, NULL, 0); + if (ret < 0) { + debug("SF: Enabling Write failed\n"); + goto out; + } + + ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0); + if (ret < 0) { + debug("SF: Winbond sector erase failed\n"); + goto out; + } + + ret = winbond_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT); + if (ret < 0) { + debug("SF: Winbond sector erase timed out\n"); + goto out; + } + } + + debug("SF: Winbond: Successfully erased %u bytes @ 0x%x\n", + len * sector_size, offset); + ret = 0; + +out: + spi_release_bus(flash->spi); + return ret; +} + +struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode) +{ + const struct winbond_spi_flash_params *params; + unsigned long page_size; + struct winbond_spi_flash *stm; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(winbond_spi_flash_table); i++) { + params = &winbond_spi_flash_table[i]; + if (params->id == ((idcode[1] << 8) | idcode[2])) + break; + } + + if (i == ARRAY_SIZE(winbond_spi_flash_table)) { + debug("SF: Unsupported Winbond ID %02x%02x\n", + idcode[1], idcode[2]); + return NULL; + } + + stm = malloc(sizeof(struct winbond_spi_flash)); + if (!stm) { + debug("SF: Failed to allocate memory\n"); + return NULL; + } + + stm->params = params; + stm->flash.spi = spi; + stm->flash.name = params->name; + + /* Assuming power-of-two page size initially. */ + page_size = 1 << params->l2_page_size; + + stm->flash.write = winbond_write; + stm->flash.erase = winbond_erase; + stm->flash.read = winbond_read_fast; + stm->flash.size = page_size * params->pages_per_sector + * params->sectors_per_block + * params->nr_blocks; + + debug("SF: Detected %s with page size %u, total %u bytes\n", + params->name, page_size, stm->flash.size); + + return &stm->flash; +} -- cgit v1.2.3 From fcffb680e77fcb48598d4a9944dbe2d4503170e0 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Wed, 14 Oct 2009 19:28:03 -0400 Subject: sf: fix stmicro offset setup while erasing Reported-by: Peter Gombos Signed-off-by: Mike Frysinger --- drivers/mtd/spi/stmicro.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mtd/spi/stmicro.c b/drivers/mtd/spi/stmicro.c index 9b910c13f..ae0d0471f 100644 --- a/drivers/mtd/spi/stmicro.c +++ b/drivers/mtd/spi/stmicro.c @@ -281,7 +281,8 @@ int stmicro_erase(struct spi_flash *flash, u32 offset, size_t len) ret = 0; for (actual = 0; actual < len; actual++) { - cmd[1] = (offset / sector_size) + actual; + cmd[1] = offset >> 16; + offset += sector_size; ret = spi_flash_cmd(flash->spi, CMD_M25PXX_WREN, NULL, 0); if (ret < 0) { -- cgit v1.2.3 From 41dfd8a60324243dbe2dc313a607910824a68aa7 Mon Sep 17 00:00:00 2001 From: Remy Bohmer Date: Wed, 28 Oct 2009 22:13:37 +0100 Subject: Add support for CS2 dataflash for Atmel-SPI. The only missing chipselect line support is CS2, and I need it on CS2... Signed-off-by: Remy Bohmer --- drivers/spi/atmel_dataflash_spi.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/spi/atmel_dataflash_spi.c b/drivers/spi/atmel_dataflash_spi.c index 614965c36..3a648e619 100644 --- a/drivers/spi/atmel_dataflash_spi.c +++ b/drivers/spi/atmel_dataflash_spi.c @@ -30,7 +30,8 @@ #include #define AT91_SPI_PCS0_DATAFLASH_CARD 0xE /* Chip Select 0: NPCS0%1110 */ -#define AT91_SPI_PCS1_DATAFLASH_CARD 0xD /* Chip Select 0: NPCS0%1101 */ +#define AT91_SPI_PCS1_DATAFLASH_CARD 0xD /* Chip Select 1: NPCS1%1101 */ +#define AT91_SPI_PCS2_DATAFLASH_CARD 0xB /* Chip Select 2: NPCS2%1011 */ #define AT91_SPI_PCS3_DATAFLASH_CARD 0x7 /* Chip Select 3: NPCS3%0111 */ void AT91F_SpiInit(void) @@ -57,7 +58,14 @@ void AT91F_SpiInit(void) ((get_mck_clk_rate() / AT91_SPI_CLK) << 8), AT91_BASE_SPI + AT91_SPI_CSR(1)); #endif - +#ifdef CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS2 + /* Configure CS2 */ + writel(AT91_SPI_NCPHA | + (AT91_SPI_DLYBS & DATAFLASH_TCSS) | + (AT91_SPI_DLYBCT & DATAFLASH_TCHS) | + ((get_mck_clk_rate() / AT91_SPI_CLK) << 8), + AT91_BASE_SPI + AT91_SPI_CSR(2)); +#endif #ifdef CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS3 /* Configure CS3 */ writel(AT91_SPI_NCPHA | @@ -99,6 +107,12 @@ void AT91F_SpiEnable(int cs) writel(mode | ((AT91_SPI_PCS1_DATAFLASH_CARD<<16) & AT91_SPI_PCS), AT91_BASE_SPI + AT91_SPI_MR); break; + case 2: /* Configure SPI CS2 for Serial DataFlash AT45DBxx */ + mode = readl(AT91_BASE_SPI + AT91_SPI_MR); + mode &= 0xFFF0FFFF; + writel(mode | ((AT91_SPI_PCS2_DATAFLASH_CARD<<16) & AT91_SPI_PCS), + AT91_BASE_SPI + AT91_SPI_MR); + break; case 3: mode = readl(AT91_BASE_SPI + AT91_SPI_MR); mode &= 0xFFF0FFFF; -- cgit v1.2.3 From 06015146a15adc7455440c491d543f6a8091551d Mon Sep 17 00:00:00 2001 From: Peter Tyser Date: Mon, 9 Nov 2009 15:18:52 -0600 Subject: m41t11: Remove unused functions Signed-off-by: Peter Tyser --- drivers/rtc/m41t11.c | 14 -------------- 1 file changed, 14 deletions(-) (limited to 'drivers') diff --git a/drivers/rtc/m41t11.c b/drivers/rtc/m41t11.c index e0c27e185..bb134875b 100644 --- a/drivers/rtc/m41t11.c +++ b/drivers/rtc/m41t11.c @@ -181,18 +181,4 @@ void rtc_reset (void) val = val & 0x3F;/*turn off freq test keep calibration*/ i2c_write(CONFIG_SYS_I2C_RTC_ADDR, RTC_CONTROL_ADDR, 1, &val, 1); } - -int rtc_store(int addr, unsigned char* data, int size) -{ - /*don't let things wrap onto the time on a write*/ - if( (addr+size) >= M41T11_STORAGE_SZ ) - return 1; - return i2c_write( CONFIG_SYS_I2C_RTC_ADDR, REG_CNT+addr, 1, data, size ); -} - -int rtc_recall(int addr, unsigned char* data, int size) -{ - return i2c_read( CONFIG_SYS_I2C_RTC_ADDR, REG_CNT+addr, 1, data, size ); -} - #endif -- cgit v1.2.3 From f3a7bddc06c927c36a1a99a97131299479ef207a Mon Sep 17 00:00:00 2001 From: Magnus Lilja Date: Wed, 11 Nov 2009 19:56:58 +0100 Subject: RTC: Fix return code in MC13783 RTC driver. Signed-off-by: Magnus Lilja --- drivers/rtc/mc13783-rtc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/rtc/mc13783-rtc.c b/drivers/rtc/mc13783-rtc.c index 05db2f1d4..416f50d01 100644 --- a/drivers/rtc/mc13783-rtc.c +++ b/drivers/rtc/mc13783-rtc.c @@ -109,7 +109,7 @@ int rtc_set(struct rtc_time *rtc) spi_release_bus(slave); - return -1; + return 0; } void rtc_reset(void) -- cgit v1.2.3