* Lead Tech Design <www.leadtechdesign.com>
* Copyright (C) 2009 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __ASM_ARM_ARCH_CLK_H__
#define __ASM_ARM_ARCH_CLK_H__
#include <asm/arch/hardware.h>
+#include <asm/arch/at91_pmc.h>
#include <asm/global_data.h>
static inline unsigned long get_cpu_clk_rate(void)
return gd->arch.at91_pllb_usb_init;
}
+#ifdef CPU_HAS_H32MXDIV
+static inline unsigned int get_h32mxdiv(void)
+{
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+ return readl(&pmc->mckr) & AT91_PMC_MCKR_H32MXDIV;
+}
+#else
+static inline unsigned int get_h32mxdiv(void)
+{
+ return 0;
+}
+#endif
+
static inline unsigned long get_macb_pclk_rate(unsigned int dev_id)
{
- return get_mck_clk_rate();
+ if (get_h32mxdiv())
+ return get_mck_clk_rate() / 2;
+ else
+ return get_mck_clk_rate();
}
static inline unsigned long get_usart_clk_rate(unsigned int dev_id)
{
- return get_mck_clk_rate();
+ if (get_h32mxdiv())
+ return get_mck_clk_rate() / 2;
+ else
+ return get_mck_clk_rate();
}
static inline unsigned long get_lcdc_clk_rate(unsigned int dev_id)
static inline unsigned long get_spi_clk_rate(unsigned int dev_id)
{
- return get_mck_clk_rate();
+ if (get_h32mxdiv())
+ return get_mck_clk_rate() / 2;
+ else
+ return get_mck_clk_rate();
}
static inline unsigned long get_twi_clk_rate(unsigned int dev_id)
{
- return get_mck_clk_rate();
+ if (get_h32mxdiv())
+ return get_mck_clk_rate() / 2;
+ else
+ return get_mck_clk_rate();
}
static inline unsigned long get_mci_clk_rate(void)
{
- return get_mck_clk_rate();
+ if (get_h32mxdiv())
+ return get_mck_clk_rate() / 2;
+ else
+ return get_mck_clk_rate();
+}
+
+static inline unsigned long get_pit_clk_rate(void)
+{
+ if (get_h32mxdiv())
+ return get_mck_clk_rate() / 2;
+ else
+ return get_mck_clk_rate();
}
int at91_clock_init(unsigned long main_clock);
+void at91_periph_clk_enable(int id);
+void at91_periph_clk_disable(int id);
#endif /* __ASM_ARM_ARCH_CLK_H__ */