From 1cd46ed2d30a931a66400635f158b14861f2d3b4 Mon Sep 17 00:00:00 2001 From: Soren Brinkmann Date: Thu, 21 Nov 2013 13:39:00 -0800 Subject: net: zynq_gem: Move RCLK details out of driver The GEM driver should not need to know about Zynq specific details of RCLK related registers and bitfields in the SLCR. Move those details to the slcr driver. Signed-off-by: Soren Brinkmann Signed-off-by: Michal Simek --- arch/arm/cpu/armv7/zynq/slcr.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/arm/cpu/armv7/zynq/slcr.c') diff --git a/arch/arm/cpu/armv7/zynq/slcr.c b/arch/arm/cpu/armv7/zynq/slcr.c index b4c11c324c..6710d92c34 100644 --- a/arch/arm/cpu/armv7/zynq/slcr.c +++ b/arch/arm/cpu/armv7/zynq/slcr.c @@ -50,7 +50,7 @@ void zynq_slcr_cpu_reset(void) } /* Setup clk for network */ -void zynq_slcr_gem_clk_setup(u32 gem_id, u32 rclk, u32 clk) +void zynq_slcr_gem_clk_setup(u32 gem_id, u32 clk) { zynq_slcr_unlock(); @@ -63,12 +63,12 @@ void zynq_slcr_gem_clk_setup(u32 gem_id, u32 rclk, u32 clk) /* 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); + writel(1, &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); + writel(1, &slcr_base->gem0_rclk_ctrl); } udelay(100000); out: -- cgit From 97598fcf10eba577622f3387eaecd43dd710da0d Mon Sep 17 00:00:00 2001 From: Soren Brinkmann Date: Thu, 21 Nov 2013 13:39:01 -0800 Subject: net: zynq_gem: Calculate clock dividers dynamically Remove hard coded clock divider setting and use the Zynq clock framework to dynamically calculate appropriate dividers at run time. Signed-off-by: Soren Brinkmann Signed-off-by: Michal Simek --- arch/arm/cpu/armv7/zynq/slcr.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) (limited to 'arch/arm/cpu/armv7/zynq/slcr.c') diff --git a/arch/arm/cpu/armv7/zynq/slcr.c b/arch/arm/cpu/armv7/zynq/slcr.c index 6710d92c34..d7c1882332 100644 --- a/arch/arm/cpu/armv7/zynq/slcr.c +++ b/arch/arm/cpu/armv7/zynq/slcr.c @@ -8,6 +8,7 @@ #include #include #include +#include #define SLCR_LOCK_MAGIC 0x767B #define SLCR_UNLOCK_MAGIC 0xDF0D @@ -50,8 +51,10 @@ void zynq_slcr_cpu_reset(void) } /* Setup clk for network */ -void zynq_slcr_gem_clk_setup(u32 gem_id, u32 clk) +void zynq_slcr_gem_clk_setup(u32 gem_id, unsigned long clk_rate) { + int ret; + zynq_slcr_unlock(); if (gem_id > 1) { @@ -59,14 +62,14 @@ void zynq_slcr_gem_clk_setup(u32 gem_id, u32 clk) goto out; } + ret = zynq_clk_set_rate(gem0_clk + gem_id, clk_rate); + if (ret) + 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(1, &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(1, &slcr_base->gem0_rclk_ctrl); } -- cgit