From mboxrd@z Thu Jan 1 00:00:00 1970 From: Magnus Damm Date: Fri, 26 Aug 2011 05:28:42 +0000 Subject: [PATCH] ARM: mach-shmobile: sh7372 CMT3 and CMT4 clock support Message-Id: <20110826052842.25747.73363.sendpatchset@rxone.opensource.se> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sh@vger.kernel.org From: Magnus Damm Add clock control support for sh7372 CMT hardware blocks. No upstream sh7372 boards are making use of CMT3 + CMT4, but the sh7372 hardware happens to come out of reset with all CMT MSTP clocks _enabled_, so to save power we need to implement a fix in software to shut down unused clocks. This patch relies on the recently merged 794d78f drivers: sh: late disabling of clocks V2 to make sure the unused clocks get disabled as expected. Signed-off-by: Magnus Damm --- This patch is needed by upcoming A3SM sleep mode support code that can only enter deep sleep in case most clocks are disabled - including these CMT clocks. arch/arm/mach-shmobile/clock-sh7372.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- 0008/arch/arm/mach-shmobile/clock-sh7372.c +++ work/arch/arm/mach-shmobile/clock-sh7372.c 2011-08-26 13:50:55.000000000 +0900 @@ -512,7 +512,8 @@ enum { MSTP001, MSTP000, MSTP218, MSTP217, MSTP216, MSTP214, MSTP208, MSTP207, MSTP206, MSTP205, MSTP204, MSTP203, MSTP202, MSTP201, MSTP200, MSTP329, MSTP328, MSTP323, MSTP322, MSTP314, MSTP313, MSTP312, - MSTP423, MSTP415, MSTP413, MSTP411, MSTP410, MSTP407, MSTP406, MSTP403, + MSTP423, MSTP415, MSTP413, MSTP411, MSTP410, MSTP407, MSTP406, + MSTP405, MSTP404, MSTP403, MSTP_NR }; #define MSTP(_parent, _reg, _bit, _flags) \ @@ -563,6 +564,8 @@ static struct clk mstp_clks[MSTP_NR] = { [MSTP410] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR4, 10, 0), /* IIC4 */ [MSTP407] = MSTP(&div4_clks[DIV4_HP], SMSTPCR4, 7, 0), /* USB-DMAC1 */ [MSTP406] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR4, 6, 0), /* USB1 */ + [MSTP405] = MSTP(&r_clk, SMSTPCR4, 5, 0), /* CMT4 */ + [MSTP404] = MSTP(&r_clk, SMSTPCR4, 4, 0), /* CMT3 */ [MSTP403] = MSTP(&r_clk, SMSTPCR4, 3, 0), /* KEYSC */ }; @@ -663,6 +666,8 @@ static struct clk_lookup lookups[] = { CLKDEV_DEV_ID("r8a66597_hcd.1", &mstp_clks[MSTP406]), /* USB1 */ CLKDEV_DEV_ID("r8a66597_udc.1", &mstp_clks[MSTP406]), /* USB1 */ CLKDEV_DEV_ID("renesas_usbhs.1", &mstp_clks[MSTP406]), /* USB1 */ + CLKDEV_DEV_ID("sh_cmt.4", &mstp_clks[MSTP405]), /* CMT4 */ + CLKDEV_DEV_ID("sh_cmt.3", &mstp_clks[MSTP404]), /* CMT3 */ CLKDEV_DEV_ID("sh_keysc.0", &mstp_clks[MSTP403]), /* KEYSC */ CLKDEV_ICK_ID("hdmi", "sh_mobile_lcdc_fb.1",