[ARM] 3959/1: AT91: Support for SAM9 USB and HCK clocks

The bits used to select the USB clocks are different on the SAM9's.
Add support for the HCK clocks on the AT91SAM9261.

Patch from Patrice Vilchez & Nicolas Ferre

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 22 insertions, 4 deletions

diff --git a/arch/arm/mach-at91rm9200/clock.c b/arch/arm/mach-at91rm9200/clock.c
index 1e0000ceb343..4dee21fefe5a 100644
--- a/arch/arm/mach-at91rm9200/clock.c
+++ b/arch/arm/mach-at91rm9200/clock.c
@@ -29,6 +29,7 @@
 
 #include <asm/hardware.h>
 #include <asm/arch/at91_pmc.h>
+#include <asm/arch/cpu.h>
 
 #include "clock.h"
 
@@ -42,6 +43,7 @@
 #define clk_is_primary(x)       ((x)->type & CLK_TYPE_PRIMARY)
 #define clk_is_programmable(x)  ((x)->type & CLK_TYPE_PROGRAMMABLE)
 #define clk_is_peripheral(x)    ((x)->type & CLK_TYPE_PERIPHERAL)
+#define clk_is_sys(x)           ((x)->type & CLK_TYPE_SYSTEM)
 
 
 static LIST_HEAD(clocks);
@@ -115,13 +117,11 @@ static void pmc_sys_mode(struct clk *clk, int is_on)
 static struct clk udpck = {
         .name           = "udpck",
         .parent         = &pllb,
-        .pmc_mask       = AT91_PMC_UDP,
         .mode           = pmc_sys_mode,
 };
 static struct clk uhpck = {
         .name           = "uhpck",
         .parent         = &pllb,
-        .pmc_mask       = AT91_PMC_UHP,
         .mode           = pmc_sys_mode,
 };
 
@@ -435,6 +435,12 @@ int __init clk_register(struct clk *clk)
                 clk->mode = pmc_periph_mode;
                 list_add_tail(&clk->node, &clocks);
         }
+        else if (clk_is_sys(clk)) {
+                clk->parent = &mck;
+                clk->mode = pmc_sys_mode;
+
+                list_add_tail(&clk->node, &clocks);
+        }
 #ifdef CONFIG_AT91_PROGRAMMABLE_CLOCKS
         else if (clk_is_programmable(clk)) {
                 clk->mode = pmc_sys_mode;
@@ -587,9 +593,21 @@ int __init at91_clock_init(unsigned long main_clock)
          */
         at91_pllb_usb_init = at91_pll_calc(main_clock, 48000000 * 2) | AT91_PMC_USB96M;
         pllb.rate_hz = at91_pll_rate(&pllb, main_clock, at91_pllb_usb_init);
-        at91_sys_write(AT91_PMC_SCDR, AT91_PMC_UHP | AT91_PMC_UDP);
+        if (cpu_is_at91rm9200()) {
+                uhpck.pmc_mask = AT91RM9200_PMC_UHP;
+                udpck.pmc_mask = AT91RM9200_PMC_UDP;
+                at91_sys_write(AT91_PMC_SCDR, AT91RM9200_PMC_UHP | AT91RM9200_PMC_UDP);
+                at91_sys_write(AT91_PMC_SCER, AT91RM9200_PMC_MCKUDP);
+        } else if (cpu_is_at91sam9260()) {
+                uhpck.pmc_mask = AT91SAM926x_PMC_UHP;
+                udpck.pmc_mask = AT91SAM926x_PMC_UDP;
+                at91_sys_write(AT91_PMC_SCDR, AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP);
+        } else if (cpu_is_at91sam9261()) {
+                uhpck.pmc_mask = (AT91SAM926x_PMC_UHP | AT91_PMC_HCK0);
+                udpck.pmc_mask = AT91SAM926x_PMC_UDP;
+                at91_sys_write(AT91_PMC_SCDR, AT91SAM926x_PMC_UHP | AT91_PMC_HCK0 | AT91SAM926x_PMC_UDP);
+        }
         at91_sys_write(AT91_CKGR_PLLBR, 0);
-        at91_sys_write(AT91_PMC_SCER, AT91_PMC_MCKUDP);
 
         udpck.rate_hz = at91_usb_rate(&pllb, pllb.rate_hz, at91_pllb_usb_init);
         uhpck.rate_hz = at91_usb_rate(&pllb, pllb.rate_hz, at91_pllb_usb_init);