linux-kernel - [PATCH 2/2] clk: at91: add register definition for sama7g5's master clock

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Date:   Mon, 19 Jul 2021 11:03:17 +0300
From:   Claudiu Beznea <claudiu.beznea@...rochip.com>
To:     <linux@...linux.org.uk>, <nicolas.ferre@...rochip.com>,
        <alexandre.belloni@...tlin.com>, <ludovic.desroches@...rochip.com>,
        <mturquette@...libre.com>, <sboyd@...nel.org>
CC:     <eugen.hristev@...rochip.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <sfr@...b.auug.org.au>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>
Subject: [PATCH 2/2] clk: at91: add register definition for sama7g5's master clock

Add register definitions for SAMA7G5's master clock. These would be
also used by architecture specific power saving code.

Fixes: 6cb0e54412a3 ("ARM: at91: pm: add support for MCK1..4 save/restore for ulp modes")
Signed-off-by: Claudiu Beznea <claudiu.beznea@...rochip.com>
---

Hi Stephen,

This is a part from patch at [1]. I keep it at minimum (only definitions)
for faster acceptance as the build is broken on arm multi_v7_defconfig
without it).
In next version of patch at [1] I will update it accordingly.

Thank you,
Claudiu Beznea

[1] https://lore.kernel.org/linux-clk/20210401122726.28528-5-claudiu.beznea@microchip.com/

 include/linux/clk/at91_pmc.h | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/include/linux/clk/at91_pmc.h b/include/linux/clk/at91_pmc.h
index a4f82e836a7c..ccb3f034bfa9 100644
--- a/include/linux/clk/at91_pmc.h
+++ b/include/linux/clk/at91_pmc.h
@@ -137,6 +137,32 @@
 #define			AT91_PMC_PLLADIV2_ON		(1 << 12)
 #define		AT91_PMC_H32MXDIV	BIT(24)
 
+#define	AT91_PMC_MCR_V2		0x30				/* Master Clock Register [SAMA7G5 only] */
+#define		AT91_PMC_MCR_V2_ID_MSK	(0xF)
+#define			AT91_PMC_MCR_V2_ID(_id)		((_id) & AT91_PMC_MCR_V2_ID_MSK)
+#define		AT91_PMC_MCR_V2_CMD	(1 << 7)
+#define		AT91_PMC_MCR_V2_DIV	(7 << 8)
+#define			AT91_PMC_MCR_V2_DIV1		(0 << 8)
+#define			AT91_PMC_MCR_V2_DIV2		(1 << 8)
+#define			AT91_PMC_MCR_V2_DIV4		(2 << 8)
+#define			AT91_PMC_MCR_V2_DIV8		(3 << 8)
+#define			AT91_PMC_MCR_V2_DIV16		(4 << 8)
+#define			AT91_PMC_MCR_V2_DIV32		(5 << 8)
+#define			AT91_PMC_MCR_V2_DIV64		(6 << 8)
+#define			AT91_PMC_MCR_V2_DIV3		(7 << 8)
+#define		AT91_PMC_MCR_V2_CSS	(0x1F << 16)
+#define			AT91_PMC_MCR_V2_CSS_MD_SLCK	(0 << 16)
+#define			AT91_PMC_MCR_V2_CSS_TD_SLCK	(1 << 16)
+#define			AT91_PMC_MCR_V2_CSS_MAINCK	(2 << 16)
+#define			AT91_PMC_MCR_V2_CSS_MCK0	(3 << 16)
+#define			AT91_PMC_MCR_V2_CSS_SYSPLL	(5 << 16)
+#define			AT91_PMC_MCR_V2_CSS_DDRPLL	(6 << 16)
+#define			AT91_PMC_MCR_V2_CSS_IMGPLL	(7 << 16)
+#define			AT91_PMC_MCR_V2_CSS_BAUDPLL	(8 << 16)
+#define			AT91_PMC_MCR_V2_CSS_AUDIOPLL	(9 << 16)
+#define			AT91_PMC_MCR_V2_CSS_ETHPLL	(10 << 16)
+#define		AT91_PMC_MCR_V2_EN	(1 << 28)
+
 #define AT91_PMC_XTALF		0x34			/* Main XTAL Frequency Register [SAMA7G5 only] */
 
 #define	AT91_PMC_USB		0x38			/* USB Clock Register [some SAM9 only] */
-- 
2.25.1