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From: Trent Piepho <trent.piepho@synapse.com>
To: barebox@lists.infradead.org
Cc: Trent Piepho <trent.piepho@synapse.com>
Subject: [PATCH v2 3/4] ARM: am335x: Enable TSC/ADC clock
Date: Fri, 25 Sep 2020 16:43:14 -0700	[thread overview]
Message-ID: <20200925234315.453448-3-trent.piepho@synapse.com> (raw)
In-Reply-To: <20200925234315.453448-1-trent.piepho@synapse.com>

Now that there is a Barebox driver for the ADC, enable the clock to the
TSC/ADC block.

This machine doesn't use common clock framework clocks in Barebox, and
instead enables any clock that might get used.  Enalbing the clock could
be made conditional based on enabling the driver, but none of the other
clocks do this.

Signed-off-by: Trent Piepho <trent.piepho@synapse.com>
---
 arch/arm/mach-omap/am33xx_clock.c              | 4 ++++
 arch/arm/mach-omap/include/mach/am33xx-clock.h | 1 +
 2 files changed, 5 insertions(+)

diff --git a/arch/arm/mach-omap/am33xx_clock.c b/arch/arm/mach-omap/am33xx_clock.c
index 0a4903827..8fa2c70aa 100644
--- a/arch/arm/mach-omap/am33xx_clock.c
+++ b/arch/arm/mach-omap/am33xx_clock.c
@@ -165,6 +165,10 @@ void am33xx_enable_per_clocks(void)
 	__raw_writel(PRCM_MOD_EN, CM_PER_USB0_CLKCTRL);
 	while ((__raw_readl(CM_PER_USB0_CLKCTRL) & 0x30000) != 0x0);
 
+	/* TSC & ADC */
+	__raw_writel(PRCM_MOD_EN, CM_WKUP_ADC_TSC_CLKCTRL);
+	while (__raw_readl(CM_WKUP_ADC_TSC_CLKCTRL) != PRCM_MOD_EN);
+
 	clkdcoldo = __raw_readl(CM_CLKDCOLDO_DPLL_PER);
 	clkdcoldo = clkdcoldo | 0x100;
 	__raw_writel(clkdcoldo, CM_CLKDCOLDO_DPLL_PER);
diff --git a/arch/arm/mach-omap/include/mach/am33xx-clock.h b/arch/arm/mach-omap/include/mach/am33xx-clock.h
index 284d5f8cf..e71ecbcd2 100644
--- a/arch/arm/mach-omap/include/mach/am33xx-clock.h
+++ b/arch/arm/mach-omap/include/mach/am33xx-clock.h
@@ -138,6 +138,7 @@
 #define CM_PER_I2C1_CLKCTRL             (CM_PER + 0x48) /* I2C1 */
 #define CM_PER_I2C2_CLKCTRL             (CM_PER + 0x44) /* I2C2 */
 #define CM_WKUP_GPIO0_CLKCTRL           (CM_WKUP + 0x8) /* GPIO0 */
+#define CM_WKUP_ADC_TSC_CLKCTRL         (CM_WKUP + 0xbc)/* TSCADC */
 
 #define CM_PER_MMC0_CLKCTRL             (CM_PER + 0x3C)
 #define CM_PER_MMC1_CLKCTRL             (CM_PER + 0xF4)
-- 
2.26.2


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  parent reply	other threads:[~2020-09-25 23:43 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-25 23:43 [PATCH v2 1/4] aiodev: Name channels with device instance name Trent Piepho
2020-09-25 23:43 ` [PATCH v2 2/4] aiodev: am335x_adc: Driver for ADC on TI AM335x SoCs Trent Piepho
2020-09-25 23:43 ` Trent Piepho [this message]
2020-09-25 23:43 ` [PATCH v2 4/4] ARM: beaglebone: Enable ADC Trent Piepho
2020-09-29  7:04 ` [PATCH v2 1/4] aiodev: Name channels with device instance name Sascha Hauer

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