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Commit 2a2b9ff8 authored by Gerhard Sittig's avatar Gerhard Sittig Committed by Anatolij Gustschin
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powerpc/512x: clk: minor comment updates 



adjust (expand on or move) a few comments,
add markers for easier navigation around helpers

Signed-off-by: default avatarGerhard Sittig <gsi@denx.de>
Acked-by: default avatarMike Turquette <mturquette@linaro.org>
Signed-off-by: default avatarAnatolij Gustschin <agust@denx.de>
parent 20755f85

arch/powerpc/platforms/512x/clock-commonclk.c

+11 −3
Original line number Diff line number Diff line
@@ -76,6 +76,8 @@ static struct clk_onecell_data clk_data; 
static struct mpc512x_ccm __iomem *clkregs;

static DEFINE_SPINLOCK(clklock);



/* common clk API wrappers {{{ */



/* convenience wrappers around the common clk API */

static inline struct clk *mpc512x_clk_fixed(const char *name, int rate)

{
@@ -139,6 +141,8 @@ static inline struct clk *mpc512x_clk_muxed(const char *name, 
				reg, pos, len, muxflags, &clklock);

}



/* }}} common clk API wrappers */



/* helper to isolate a bit field from a register */

static inline int get_bit_field(uint32_t __iomem *reg, uint8_t pos, uint8_t len)

{
@@ -308,6 +312,8 @@ static void mpc512x_clk_setup_ref_clock(struct device_node *np, int bus_freq, 
	}

}



/* MCLK helpers {{{ */



/*

 * helper code for the MCLK subtree setup

 *
@@ -338,8 +344,8 @@ static void mpc512x_clk_setup_ref_clock(struct device_node *np, int bus_freq, 


/*

 * note that this declaration raises a checkpatch warning, but

 * it's the very data type which <linux/clk-provider.h> expects,

 * making this declaration pass checkpatch will break compilation

 * it's the very data type dictated by <linux/clk-provider.h>,

 * "fixing" this warning will break compilation

 */

static const char *parent_names_mux0[] = {

	"sys", "ref", "psc-mclk-in", "spdif-tx",
@@ -512,6 +518,8 @@ static void mpc512x_clk_setup_mclk(struct mclk_setup_data *entry, size_t idx) 
	}

}



/* }}} MCLK helpers */



static void mpc512x_clk_setup_clock_tree(struct device_node *np, int busfreq)

{

	int sys_mul, sys_div, ips_div;
@@ -549,8 +557,8 @@ static void mpc512x_clk_setup_clock_tree(struct device_node *np, int busfreq) 
	clks[MPC512x_CLK_IPS] = mpc512x_clk_divtable("ips", "csb",

						     &clkregs->scfr1, 23, 3,

						     divtab_2346);



	/* now setup anything below SYS and CSB and IPS */



	clks[MPC512x_CLK_DDR_UG] = mpc512x_clk_factor("ddr-ug", "sys", 1, 2);

	clks[MPC512x_CLK_SDHC_x4] = mpc512x_clk_factor("sdhc-x4", "csb", 4, 1);

	clks[MPC512x_CLK_SDHC_UG] = mpc512x_clk_divider("sdhc-ug", "sdhc-x4", 0,