[U-Boot] [PATCH 3/7] mx25: Define more standard clocks
Benoît Thébaudeau
benoit.thebaudeau at advansee.com
Thu Sep 27 22:27:28 CEST 2012
Define AHB, IPG and CSPI clocks.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau at advansee.com>
Cc: Stefano Babic <sbabic at denx.de>
---
.../arch/arm/cpu/arm926ejs/mx25/generic.c | 10 ++++++++++
.../arch/arm/include/asm/arch-mx25/clock.h | 5 +++++
2 files changed, 15 insertions(+)
diff --git u-boot-imx-e1eb75b.orig/arch/arm/cpu/arm926ejs/mx25/generic.c u-boot-imx-e1eb75b/arch/arm/cpu/arm926ejs/mx25/generic.c
index 5503522..219c9eb 100644
--- u-boot-imx-e1eb75b.orig/arch/arm/cpu/arm926ejs/mx25/generic.c
+++ u-boot-imx-e1eb75b/arch/arm/cpu/arm926ejs/mx25/generic.c
@@ -101,6 +101,11 @@ ulong imx_get_ahbclk(void)
return fref / div;
}
+static ulong imx_get_ipgclk(void)
+{
+ return imx_get_ahbclk() / 2;
+}
+
ulong imx_get_perclk(int clk)
{
struct ccm_regs *ccm = (struct ccm_regs *)IMX_CCM_BASE;
@@ -120,6 +125,11 @@ unsigned int mxc_get_clock(enum mxc_clock clk)
switch (clk) {
case MXC_ARM_CLK:
return imx_get_armclk();
+ case MXC_AHB_CLK:
+ return imx_get_ahbclk();
+ case MXC_IPG_CLK:
+ case MXC_CSPI_CLK:
+ return imx_get_ipgclk();
case MXC_FEC_CLK:
return imx_get_ahbclk();
default:
diff --git u-boot-imx-e1eb75b.orig/arch/arm/include/asm/arch-mx25/clock.h u-boot-imx-e1eb75b/arch/arm/include/asm/arch-mx25/clock.h
index a313b80..9823f46 100644
--- u-boot-imx-e1eb75b.orig/arch/arm/include/asm/arch-mx25/clock.h
+++ u-boot-imx-e1eb75b/arch/arm/include/asm/arch-mx25/clock.h
@@ -41,6 +41,7 @@
#endif
enum mxc_clock {
+ /* PER clocks (do not change order) */
MXC_CSI_CLK,
MXC_EPIT_CLK,
MXC_ESAI_CLK,
@@ -57,7 +58,11 @@ enum mxc_clock {
MXC_SSI1_CLK,
MXC_SSI2_CLK,
MXC_UART_CLK,
+ /* Other clocks */
MXC_ARM_CLK,
+ MXC_AHB_CLK,
+ MXC_IPG_CLK,
+ MXC_CSPI_CLK,
MXC_FEC_CLK,
MXC_CLK_NUM
};
More information about the U-Boot
mailing list