summaryrefslogtreecommitdiff
path: root/board/nvidia
diff options
context:
space:
mode:
authorSimon Glass <sjg@chromium.org>2011-08-30 06:23:13 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2011-09-04 11:36:15 +0200
commitb4ba2be8dc2711ad2219186e89b4e10648d52af9 (patch)
tree29ba715cbb5475cec2236e2e683c09d7675c6893 /board/nvidia
parent39d3416f0afc43d56fc47b74c75388580033c3bb (diff)
downloadu-boot-imx-b4ba2be8dc2711ad2219186e89b4e10648d52af9.zip
u-boot-imx-b4ba2be8dc2711ad2219186e89b4e10648d52af9.tar.gz
u-boot-imx-b4ba2be8dc2711ad2219186e89b4e10648d52af9.tar.bz2
Tegra2: Add more clock support
This adds functions to enable/disable clocks and reset to on-chip peripherals. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'board/nvidia')
-rw-r--r--board/nvidia/common/board.c79
1 files changed, 22 insertions, 57 deletions
diff --git a/board/nvidia/common/board.c b/board/nvidia/common/board.c
index 5eca5eb..945141e 100644
--- a/board/nvidia/common/board.c
+++ b/board/nvidia/common/board.c
@@ -28,6 +28,7 @@
#include <asm/arch/sys_proto.h>
#include <asm/arch/clk_rst.h>
+#include <asm/arch/clock.h>
#include <asm/arch/pinmux.h>
#include <asm/arch/uart.h>
#include "board.h"
@@ -76,33 +77,28 @@ int timer_init(void)
static void clock_init_uart(void)
{
struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+ struct clk_pll *pll = &clkrst->crc_pll[CLOCK_PLL_ID_PERIPH];
u32 reg;
- reg = readl(&clkrst->crc_pllp_base);
+ reg = readl(&pll->pll_base);
if (!(reg & PLL_BASE_OVRRIDE)) {
/* Override pllp setup for 216MHz operation. */
- reg = (PLL_BYPASS | PLL_BASE_OVRRIDE | PLL_DIVP);
- reg |= (((NVRM_PLLP_FIXED_FREQ_KHZ/500) << 8) | PLL_DIVM);
- writel(reg, &clkrst->crc_pllp_base);
+ reg = (PLL_BYPASS | PLL_BASE_OVRRIDE | PLL_DIVP_VALUE);
+ reg |= (((NVRM_PLLP_FIXED_FREQ_KHZ/500) << 8) | PLL_DIVM_VALUE);
+ writel(reg, &pll->pll_base);
reg |= PLL_ENABLE;
- writel(reg, &clkrst->crc_pllp_base);
+ writel(reg, &pll->pll_base);
reg &= ~PLL_BYPASS;
- writel(reg, &clkrst->crc_pllp_base);
+ writel(reg, &pll->pll_base);
}
/* Now do the UART reset/clock enable */
#if defined(CONFIG_TEGRA2_ENABLE_UARTA)
- /* Assert Reset to UART */
- reg = readl(&clkrst->crc_rst_dev_l);
- reg |= SWR_UARTA_RST; /* SWR_UARTA_RST = 1 */
- writel(reg, &clkrst->crc_rst_dev_l);
-
- /* Enable clk to UART */
- reg = readl(&clkrst->crc_clk_out_enb_l);
- reg |= CLK_ENB_UARTA; /* CLK_ENB_UARTA = 1 */
- writel(reg, &clkrst->crc_clk_out_enb_l);
+ /* Assert UART reset and enable clock */
+ reset_set_enable(PERIPH_ID_UART1, 1);
+ clock_enable(PERIPH_ID_UART1);
/* Enable pllp_out0 to UART */
reg = readl(&clkrst->crc_clk_src_uarta);
@@ -113,20 +109,12 @@ static void clock_init_uart(void)
udelay(2);
/* De-assert reset to UART */
- reg = readl(&clkrst->crc_rst_dev_l);
- reg &= ~SWR_UARTA_RST; /* SWR_UARTA_RST = 0 */
- writel(reg, &clkrst->crc_rst_dev_l);
+ reset_set_enable(PERIPH_ID_UART1, 0);
#endif /* CONFIG_TEGRA2_ENABLE_UARTA */
#if defined(CONFIG_TEGRA2_ENABLE_UARTD)
- /* Assert Reset to UART */
- reg = readl(&clkrst->crc_rst_dev_u);
- reg |= SWR_UARTD_RST; /* SWR_UARTD_RST = 1 */
- writel(reg, &clkrst->crc_rst_dev_u);
-
- /* Enable clk to UART */
- reg = readl(&clkrst->crc_clk_out_enb_u);
- reg |= CLK_ENB_UARTD; /* CLK_ENB_UARTD = 1 */
- writel(reg, &clkrst->crc_clk_out_enb_u);
+ /* Assert UART reset and enable clock */
+ reset_set_enable(PERIPH_ID_UART4, 1);
+ clock_enable(PERIPH_ID_UART4);
/* Enable pllp_out0 to UART */
reg = readl(&clkrst->crc_clk_src_uartd);
@@ -137,9 +125,7 @@ static void clock_init_uart(void)
udelay(2);
/* De-assert reset to UART */
- reg = readl(&clkrst->crc_rst_dev_u);
- reg &= ~SWR_UARTD_RST; /* SWR_UARTD_RST = 0 */
- writel(reg, &clkrst->crc_rst_dev_u);
+ reset_set_enable(PERIPH_ID_UART4, 0);
#endif /* CONFIG_TEGRA2_ENABLE_UARTD */
}
@@ -183,16 +169,8 @@ static void clock_init_mmc(void)
u32 reg;
/* Do the SDMMC resets/clock enables */
-
- /* Assert Reset to SDMMC4 */
- reg = readl(&clkrst->crc_rst_dev_l);
- reg |= SWR_SDMMC4_RST; /* SWR_SDMMC4_RST = 1 */
- writel(reg, &clkrst->crc_rst_dev_l);
-
- /* Enable clk to SDMMC4 */
- reg = readl(&clkrst->crc_clk_out_enb_l);
- reg |= CLK_ENB_SDMMC4; /* CLK_ENB_SDMMC4 = 1 */
- writel(reg, &clkrst->crc_clk_out_enb_l);
+ reset_set_enable(PERIPH_ID_SDMMC4, 1);
+ clock_enable(PERIPH_ID_SDMMC4);
/* Enable pllp_out0 to SDMMC4 */
reg = readl(&clkrst->crc_clk_src_sdmmc4);
@@ -206,20 +184,10 @@ static void clock_init_mmc(void)
*/
udelay(2);
- /* De-assert reset to SDMMC4 */
- reg = readl(&clkrst->crc_rst_dev_l);
- reg &= ~SWR_SDMMC4_RST; /* SWR_SDMMC4_RST = 0 */
- writel(reg, &clkrst->crc_rst_dev_l);
-
- /* Assert Reset to SDMMC3 */
- reg = readl(&clkrst->crc_rst_dev_u);
- reg |= SWR_SDMMC3_RST; /* SWR_SDMMC3_RST = 1 */
- writel(reg, &clkrst->crc_rst_dev_u);
+ reset_set_enable(PERIPH_ID_SDMMC4, 1);
- /* Enable clk to SDMMC3 */
- reg = readl(&clkrst->crc_clk_out_enb_u);
- reg |= CLK_ENB_SDMMC3; /* CLK_ENB_SDMMC3 = 1 */
- writel(reg, &clkrst->crc_clk_out_enb_u);
+ reset_set_enable(PERIPH_ID_SDMMC3, 1);
+ clock_enable(PERIPH_ID_SDMMC3);
/* Enable pllp_out0 to SDMMC4, set divisor to 11 for 20MHz */
reg = readl(&clkrst->crc_clk_src_sdmmc3);
@@ -230,10 +198,7 @@ static void clock_init_mmc(void)
/* wait for 2us */
udelay(2);
- /* De-assert reset to SDMMC3 */
- reg = readl(&clkrst->crc_rst_dev_u);
- reg &= ~SWR_SDMMC3_RST; /* SWR_SDMMC3_RST = 0 */
- writel(reg, &clkrst->crc_rst_dev_u);
+ reset_set_enable(PERIPH_ID_SDMMC3, 0);
}
/*