diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2017-07-28 22:21:30 +0200 |
|---|---|---|
| committer | Lucas Stach <l.stach@pengutronix.de> | 2017-07-30 21:20:02 +0200 |
| commit | b1eab5a7968752a75d978731148b738ee4ea2212 (patch) | |
| tree | 2cc57dcbf890b925e425e914ebd4fb71b9b7e9ca /arch | |
| parent | ab082c6a75514916b45bf63b9cd2ce30f7d7fe84 (diff) | |
| download | barebox-b1eab5a7968752a75d978731148b738ee4ea2212.tar.gz barebox-b1eab5a7968752a75d978731148b738ee4ea2212.tar.xz | |
ARM: i.MX7: Warp7: Add some code comments
This makes it easier to understand what is done and adapt this code for
other boards. My editor also added a newline at eof which is good.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/boards/element14-warp7/lowlevel.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/arm/boards/element14-warp7/lowlevel.c b/arch/arm/boards/element14-warp7/lowlevel.c index 38b7745f64..89a77d2f88 100644 --- a/arch/arm/boards/element14-warp7/lowlevel.c +++ b/arch/arm/boards/element14-warp7/lowlevel.c @@ -17,10 +17,16 @@ static noinline void warp7_start(void) void __iomem *ccmbase = IOMEM(MX7_CCM_BASE_ADDR); void *fdt; + /* CCM_CCGR148_CLR, uart1 */ writel(0x3, ccmbase + 0x4000 + 16 * 148 + 0x8); + /* CCM_TARGET_ROOT95 = UART1_CLK_ROOT */ writel(0x10000000, ccmbase + 0x8000 + 128 * 95); + /* CCM_CCGR148_SET, uart1 */ writel(0x3, ccmbase + 0x4000 + 16 * 148 + 0x4); + + /* MX7D_PAD_UART1_RX_DATA__UART1_DCE_RX without daisy chaining */ writel(0x0, iomuxbase + 0x128); + /* MX7D_PAD_UART1_TX_DATA__UART1_DCE_TX */ writel(0x0, iomuxbase + 0x12c); imx7_uart_setup(uart); @@ -45,4 +51,4 @@ ENTRY_FUNCTION(start_imx7s_element14_warp7, r0, r1, r2) barrier(); warp7_start(); -}
\ No newline at end of file +} |