[U-Boot] [PATCH 1/6] arm: socfpga: Add DW master SPI clock to clock_manager.c
Stefan Roese
sr at denx.de
Fri Nov 7 13:50:29 CET 2014
This function will be needed by the upcoming Designware master SPI
driver.
Signed-off-by: Stefan Roese <sr at denx.de>
Cc: Chin Liang See <clsee at altera.com>
Cc: Dinh Nguyen <dinguyen at altera.com>
Cc: Vince Bridgers <vbridger at altera.com>
Cc: Marek Vasut <marex at denx.de>
Cc: Pavel Machek <pavel at denx.de>
---
arch/arm/cpu/armv7/socfpga/clock_manager.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/arch/arm/cpu/armv7/socfpga/clock_manager.c b/arch/arm/cpu/armv7/socfpga/clock_manager.c
index d869f47..fa3b93a 100644
--- a/arch/arm/cpu/armv7/socfpga/clock_manager.c
+++ b/arch/arm/cpu/armv7/socfpga/clock_manager.c
@@ -507,6 +507,19 @@ unsigned int cm_get_qspi_controller_clk_hz(void)
return clock;
}
+unsigned int cm_get_spi_controller_clk_hz(void)
+{
+ uint32_t reg, clock = 0;
+
+ clock = cm_get_per_vco_clk_hz();
+
+ /* get the clock prior L4 SP divider (periph_base_clk) */
+ reg = readl(&clock_manager_base->per_pll.perbaseclk);
+ clock /= (reg + 1);
+
+ return clock;
+}
+
static void cm_print_clock_quick_summary(void)
{
printf("MPU %10ld kHz\n", cm_get_mpu_clk_hz() / 1000);
@@ -518,6 +531,7 @@ static void cm_print_clock_quick_summary(void)
printf("MMC %8d kHz\n", cm_get_mmc_controller_clk_hz() / 1000);
printf("QSPI %8d kHz\n", cm_get_qspi_controller_clk_hz() / 1000);
printf("UART %8d kHz\n", cm_get_l4_sp_clk_hz() / 1000);
+ printf("SPI %8d kHz\n", cm_get_spi_controller_clk_hz() / 1000);
}
int set_cpu_clk_info(void)
--
2.1.3
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