[PATCH v5 06/12] ARM: AM33XX: clk: Add clock node for EHRPWM TBCLK
From: Philip, Avinash <hidden>
Date: 2012-11-27 08:50:40
Also in:
linux-arm-kernel, linux-devicetree, lkml
Subsystem:
arm port, omap clock framework support, omap2+ support, the rest · Maintainers:
Russell King, Paul Walmsley, Aaro Koskinen, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Linus Torvalds
EHRPWM module requires explicit clock gating of TBCLK from control module. Hence add TBCLK clock node in clock tree for EHRPWM modules. Signed-off-by: Philip, Avinash <redacted> --- Changes since v4: - Add dev_id field in clcok tree for TBCLK to remove support for optional HWMOD clock support for EHRPWM. arch/arm/mach-omap2/clock33xx_data.c | 37 ++++++++++++++++++++++++++++++++++ arch/arm/mach-omap2/control.h | 8 +++++++ 2 files changed, 45 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/clock33xx_data.c b/arch/arm/mach-omap2/clock33xx_data.c
index 1a45d6b..d08cd9a 100644
--- a/arch/arm/mach-omap2/clock33xx_data.c
+++ b/arch/arm/mach-omap2/clock33xx_data.c@@ -996,6 +996,40 @@ static struct clk wdt1_fck = { }; /* + * PWMSS Time based module clock node. This node is + * requred to enable clock gating for EHRPWM TBCLK. + */ +static struct clk ehrpwm0_tbclk = { + .name = "ehrpwm0_tbclk", + .clkdm_name = "l4ls_clkdm", + .enable_reg = AM33XX_CTRL_REGADDR(AM33XX_PWMSS_TBCLK_CLKCTRL), + .enable_bit = AM33XX_PWMSS0_TBCLKEN_SHIFT, + .ops = &clkops_omap2_dflt, + .parent = &l4ls_gclk, + .recalc = &followparent_recalc, +}; + +static struct clk ehrpwm1_tbclk = { + .name = "ehrpwm1_tbclk", + .clkdm_name = "l4ls_clkdm", + .enable_reg = AM33XX_CTRL_REGADDR(AM33XX_PWMSS_TBCLK_CLKCTRL), + .enable_bit = AM33XX_PWMSS1_TBCLKEN_SHIFT, + .ops = &clkops_omap2_dflt, + .parent = &l4ls_gclk, + .recalc = &followparent_recalc, +}; + +static struct clk ehrpwm2_tbclk = { + .name = "ehrpwm2_tbclk", + .clkdm_name = "l4ls_clkdm", + .enable_reg = AM33XX_CTRL_REGADDR(AM33XX_PWMSS_TBCLK_CLKCTRL), + .enable_bit = AM33XX_PWMSS2_TBCLKEN_SHIFT, + .ops = &clkops_omap2_dflt, + .parent = &l4ls_gclk, + .recalc = &followparent_recalc, +}; + +/* * clkdev */ static struct omap_clk am33xx_clks[] = {
@@ -1075,6 +1109,9 @@ static struct omap_clk am33xx_clks[] = { CLK(NULL, "clkout2_ck", &clkout2_ck, CK_AM33XX), CLK(NULL, "timer_32k_ck", &clkdiv32k_ick, CK_AM33XX), CLK(NULL, "timer_sys_ck", &sys_clkin_ck, CK_AM33XX), + CLK("48300200.ehrpwm", "tbclk", &ehrpwm0_tbclk, CK_AM33XX), + CLK("48302200.ehrpwm", "tbclk", &ehrpwm1_tbclk, CK_AM33XX), + CLK("48304200.ehrpwm", "tbclk", &ehrpwm2_tbclk, CK_AM33XX), }; int __init am33xx_clk_init(void)
diff --git a/arch/arm/mach-omap2/control.h b/arch/arm/mach-omap2/control.h
index a89e825..c0e34e6 100644
--- a/arch/arm/mach-omap2/control.h
+++ b/arch/arm/mach-omap2/control.h@@ -357,6 +357,14 @@ #define AM33XX_CONTROL_STATUS_SYSBOOT1_WIDTH 0x2 #define AM33XX_CONTROL_STATUS_SYSBOOT1_MASK (0x3 << 22) +/* AM33XX PWMSS Control register */ +#define AM33XX_PWMSS_TBCLK_CLKCTRL 0x664 + +/* AM33XX PWMSS Control bitfields */ +#define AM33XX_PWMSS0_TBCLKEN_SHIFT 0 +#define AM33XX_PWMSS1_TBCLKEN_SHIFT 1 +#define AM33XX_PWMSS2_TBCLKEN_SHIFT 2 + /* CONTROL OMAP STATUS register to identify OMAP3 features */ #define OMAP3_CONTROL_OMAP_STATUS 0x044c
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1.7.0.4