| From ltsi-dev-bounces@lists.linuxfoundation.org Mon Jun 18 04:06:00 2012 |
| From: Tetsuyuki Kobayashi <koba@kmckk.co.jp> |
| Date: Mon, 18 Jun 2012 20:06:02 +0900 |
| Subject: LTSI: ARM: shmobile: kzm9g: Support Real Time Clock |
| To: ltsi-dev@lists.linuxfoundation.org |
| Message-ID: <4FDF0B9A.6030404@kmckk.co.jp> |
| |
| |
| KZM-A9-GT board has RTC device r2025d at I2C channel 0 |
| with slave address 0x64. |
| |
| This patch enables reading and writing hardware real time clock on |
| KZM-A9-GT board. Interrupt is not yet supported. |
| |
| How to test this patch using user space command. |
| |
| Read RTC |
| # hwclock -r |
| |
| Copy system clock to RTC |
| # hwclock -w |
| |
| Shutdown and power off the board, and wait a while, then power on again. |
| Check RTC still keeps correct date. |
| |
| Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp> |
| --- |
| arch/arm/configs/kzm9g_defconfig | 1 + |
| arch/arm/mach-shmobile/board-kzm9g.c | 3 +++ |
| 2 files changed, 4 insertions(+) |
| |
| --- a/arch/arm/configs/kzm9g_defconfig |
| +++ b/arch/arm/configs/kzm9g_defconfig |
| @@ -108,6 +108,7 @@ CONFIG_MMC_SH_MMCIF=y |
| CONFIG_NEW_LEDS=y |
| CONFIG_LEDS_CLASS=y |
| CONFIG_RTC_CLASS=y |
| +CONFIG_RTC_DRV_RS5C372=y |
| CONFIG_DMADEVICES=y |
| CONFIG_SH_DMAE=y |
| CONFIG_ASYNC_TX_DMA=y |
| --- a/arch/arm/mach-shmobile/board-kzm9g.c |
| +++ b/arch/arm/mach-shmobile/board-kzm9g.c |
| @@ -278,6 +278,9 @@ static struct pcf857x_platform_data pcf8 |
| static struct i2c_board_info i2c0_devices[] = { |
| { |
| I2C_BOARD_INFO("ak4648", 0x12), |
| + }, |
| + { |
| + I2C_BOARD_INFO("r2025sd", 0x32), |
| } |
| }; |
| |
