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clk: spear3xx: Set proper clock parent of uart1/2 

The uarts only work when the parent is ras_ahb_clk. The stale 3.5
based ST tree does this in the board file.

Add it to the clk init function. Not pretty, but the mess there is
amazing anyway.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This commit is contained in:
Thomas Gleixner 2014-06-19 21:52:24 +00:00 committed by Mike Turquette
parent 15ebb05248
commit 449437778b
1 changed files with 10 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/clk/spear/spear3xx_clock.c
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@ -245,7 +245,8 @@ static const char *smii0_parents[] = { "smii_125m_pad", "ras_pll2_clk",
"ras_syn0_gclk", };
static const char *uartx_parents[] = { "ras_syn1_gclk", "ras_apb_clk", };
static void __init spear320_clk_init(void __iomem *soc_config_base)
static void __init spear320_clk_init(void __iomem *soc_config_base,
struct clk *ras_apb_clk)
{
struct clk *clk;
@ -342,6 +343,8 @@ static void __init spear320_clk_init(void __iomem *soc_config_base)
SPEAR320_CONTROL_REG, UART1_PCLK_SHIFT, UART1_PCLK_MASK,
0, &_lock);
clk_register_clkdev(clk, NULL, "a3000000.serial");
/* Enforce ras_apb_clk */
clk_set_parent(clk, ras_apb_clk);
clk = clk_register_mux(NULL, "uart2_clk", uartx_parents,
ARRAY_SIZE(uartx_parents),
@ -349,6 +352,8 @@ static void __init spear320_clk_init(void __iomem *soc_config_base)
SPEAR320_EXT_CTRL_REG, SPEAR320_UART2_PCLK_SHIFT,
SPEAR320_UARTX_PCLK_MASK, 0, &_lock);
clk_register_clkdev(clk, NULL, "a4000000.serial");
/* Enforce ras_apb_clk */
clk_set_parent(clk, ras_apb_clk);
clk = clk_register_mux(NULL, "uart3_clk", uartx_parents,
ARRAY_SIZE(uartx_parents),
@ -379,12 +384,12 @@ static void __init spear320_clk_init(void __iomem *soc_config_base)
clk_register_clkdev(clk, NULL, "60100000.serial");
}
#else
static inline void spear320_clk_init(void __iomem *soc_config_base) { }
static inline void spear320_clk_init(void __iomem *sb, struct clk *rc) { }
#endif
void __init spear3xx_clk_init(void __iomem *misc_base, void __iomem *soc_config_base)
{
struct clk *clk, *clk1;
struct clk *clk, *clk1, *ras_apb_clk;
clk = clk_register_fixed_rate(NULL, "osc_32k_clk", NULL, CLK_IS_ROOT,
32000);
@ -613,6 +618,7 @@ void __init spear3xx_clk_init(void __iomem *misc_base, void __iomem *soc_config_
clk = clk_register_gate(NULL, "ras_apb_clk", "apb_clk", 0, RAS_CLK_ENB,
RAS_APB_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, "ras_apb_clk", NULL);
ras_apb_clk = clk;
clk = clk_register_gate(NULL, "ras_32k_clk", "osc_32k_clk", 0,
RAS_CLK_ENB, RAS_32K_CLK_ENB, 0, &_lock);
@ -659,5 +665,5 @@ void __init spear3xx_clk_init(void __iomem *misc_base, void __iomem *soc_config_
else if (of_machine_is_compatible("st,spear310"))
spear310_clk_init();
else if (of_machine_is_compatible("st,spear320"))
spear320_clk_init(soc_config_base);
spear320_clk_init(soc_config_base, ras_apb_clk);
}