From mboxrd@z Thu Jan 1 00:00:00 1970 From: linus.walleij@linaro.org (Linus Walleij) Date: Fri, 17 Apr 2015 10:58:47 +0200 Subject: [PATCH 00/13] Enable CoreSight for the Ux500 Message-ID: <1429261140-13910-1-git-send-email-linus.walleij@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This patch series enables the CoreSight blocks for the Ux500. To do so I ran into a few obstacles, all resolved in this series: - The Ux500 have two distinct clocks clocking the CS blocks, APETRACECLK clocking the AHB interconnect, what is usually referred to as "apb_pclk" in the AMBA primecell abstraction layer, and another clock called APEATCLK which is connected to the actual ATCLK on the CS blocks. So I have to add handling for this second clock as only the PCLK is handled today. - Doing so I need to use runtime PM, and I discovered that the current CS drivers go in and grab the PCLK from the AMBA primecell abstraction which is wrong: this shall be handled using runtime PM callbacks, see e.g. drivers/mmc/host/mmci.c. So I made a patch series fixing this. This also fixes the problem that the PCLK is left on since none of the drivers call pm_runtime_put() so the AMBA core can disable the PCLK, instead they are poking around with the PCLK themselves which is wrong. Linus Walleij (13): coresight: etm: print what version of ETM/PTM is detected coresight: support the TPIU version found in Ux500 coresight: etm: let runtime PM handle core clock coresight: tpiu: let runtime PM handle core clock coresight: etb: let runtime PM handle core clock coresight: funnel: let runtime PM handle core clock coresight: tmc: let runtime PM handle core clock coresight: etm: retrieve and handle atclk coresight: tpiu: retrieve and handle atclk coresight: etb: retrieve and handle atclk coresight: funnel: retrieve and handle atclk coresight: replicator: retrieve and handle atclk ARM: ux500: add CoreSight blocks to DTS file arch/arm/boot/dts/ste-dbx5x0.dtsi | 129 +++++++++++++++++++++++++++++++ drivers/coresight/coresight-etb10.c | 74 +++++++++++------- drivers/coresight/coresight-etm.h | 4 +- drivers/coresight/coresight-etm3x.c | 102 +++++++++++++----------- drivers/coresight/coresight-funnel.c | 63 +++++++++++---- drivers/coresight/coresight-replicator.c | 43 +++++++++++ drivers/coresight/coresight-tmc.c | 20 ++--- drivers/coresight/coresight-tpiu.c | 62 +++++++++++---- 8 files changed, 376 insertions(+), 121 deletions(-) -- 1.9.3