diff options
Diffstat (limited to 'arch/arm/cpu/armv7/zynq/slcr.c')
-rw-r--r-- | arch/arm/cpu/armv7/zynq/slcr.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/zynq/slcr.c b/arch/arm/cpu/armv7/zynq/slcr.c index 788a8fd..52048c6 100644 --- a/arch/arm/cpu/armv7/zynq/slcr.c +++ b/arch/arm/cpu/armv7/zynq/slcr.c @@ -28,6 +28,9 @@ #define SLCR_LOCK_MAGIC 0x767B #define SLCR_UNLOCK_MAGIC 0xDF0D +#define SLCR_IDCODE_MASK 0x1F000 +#define SLCR_IDCODE_SHIFT 12 + static int slcr_lock = 1; /* 1 means locked, 0 means unlocked */ void zynq_slcr_lock(void) @@ -61,3 +64,61 @@ void zynq_slcr_cpu_reset(void) writel(1, &slcr_base->pss_rst_ctrl); } + +/* Setup clk for network */ +void zynq_slcr_gem_clk_setup(u32 gem_id, u32 rclk, u32 clk) +{ + zynq_slcr_unlock(); + + if (gem_id > 1) { + printf("Non existing GEM id %d\n", gem_id); + goto out; + } + + if (gem_id) { + /* Set divisors for appropriate frequency in GEM_CLK_CTRL */ + writel(clk, &slcr_base->gem1_clk_ctrl); + /* Configure GEM_RCLK_CTRL */ + writel(rclk, &slcr_base->gem1_rclk_ctrl); + } else { + /* Set divisors for appropriate frequency in GEM_CLK_CTRL */ + writel(clk, &slcr_base->gem0_clk_ctrl); + /* Configure GEM_RCLK_CTRL */ + writel(rclk, &slcr_base->gem0_rclk_ctrl); + } + +out: + zynq_slcr_lock(); +} + +void zynq_slcr_devcfg_disable(void) +{ + zynq_slcr_unlock(); + + /* Disable AXI interface */ + writel(0xFFFFFFFF, &slcr_base->fpga_rst_ctrl); + + /* Set Level Shifters DT618760 */ + writel(0xA, &slcr_base->lvl_shftr_en); + + zynq_slcr_lock(); +} + +void zynq_slcr_devcfg_enable(void) +{ + zynq_slcr_unlock(); + + /* Set Level Shifters DT618760 */ + writel(0xF, &slcr_base->lvl_shftr_en); + + /* Disable AXI interface */ + writel(0x0, &slcr_base->fpga_rst_ctrl); + + zynq_slcr_lock(); +} + +u32 zynq_slcr_get_idcode(void) +{ + return (readl(&slcr_base->pss_idcode) & SLCR_IDCODE_MASK) >> + SLCR_IDCODE_SHIFT; +} |