{"id":816900,"url":"http://patchwork.ozlabs.org/api/patches/816900/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/patch/1506004213-22620-15-git-send-email-jjhiblot@ti.com/","project":{"id":18,"url":"http://patchwork.ozlabs.org/api/projects/18/?format=json","name":"U-Boot","link_name":"uboot","list_id":"u-boot.lists.denx.de","list_email":"u-boot@lists.denx.de","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<1506004213-22620-15-git-send-email-jjhiblot@ti.com>","list_archive_url":null,"date":"2017-09-21T14:30:01","name":"[U-Boot,v2,14/26] mmc: Add a new callback function to perform the 74 clocks cycle sequence","commit_ref":"318a7a576bc49aa8b4207e694d3fbd48c663d6ac","pull_url":null,"state":"accepted","archived":false,"hash":"4904186abe5cb4e7fac98c2b814afefdabc80fdf","submitter":{"id":70508,"url":"http://patchwork.ozlabs.org/api/people/70508/?format=json","name":"Jean-Jacques Hiblot","email":"jjhiblot@ti.com"},"delegate":{"id":12423,"url":"http://patchwork.ozlabs.org/api/users/12423/?format=json","username":"Jaehoon","first_name":"Jaehoon","last_name":"Chung","email":"jh80.chung@samsung.com"},"mbox":"http://patchwork.ozlabs.org/project/uboot/patch/1506004213-22620-15-git-send-email-jjhiblot@ti.com/mbox/","series":[{"id":4400,"url":"http://patchwork.ozlabs.org/api/series/4400/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/list/?series=4400","date":"2017-09-21T14:29:47","name":"mmc: Add support for HS200 and UHS modes","version":2,"mbox":"http://patchwork.ozlabs.org/series/4400/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/816900/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/816900/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.denx.de\n\t(client-ip=81.169.180.215; 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a=rsa-sha256; c=relaxed/simple; d=ti.com;\n\ts=ti-com-17Q1; t=1506004249;\n\tbh=LC3p4z2YTbEXPPjs9tDR07RIL4VofHJ4mQUIEzTYI2c=;\n\th=From:To:CC:Subject:Date:In-Reply-To:References;\n\tb=ukRGfOiCd5p3HboIQeVVEtf2zMODzTZgFXI+AdB5u/VuV8GK0CRn9TQHrFGl8wfsM\n\tMuVB98ME+fpbYpI5DYJC8uETipjygbRPMSUeSxo33nyqCAHCzY7HyDz9yH75R7r7z7\n\tACW+Da2kpCCpeUuJIERaSVoKNTQC37ajPDsVHkoM=","From":"Jean-Jacques Hiblot ","To":", , ,\n\t","Date":"Thu, 21 Sep 2017 16:30:01 +0200","Message-ID":"<1506004213-22620-15-git-send-email-jjhiblot@ti.com>","X-Mailer":"git-send-email 1.9.1","In-Reply-To":"<1506004213-22620-1-git-send-email-jjhiblot@ti.com>","References":"<1506004213-22620-1-git-send-email-jjhiblot@ti.com>","MIME-Version":"1.0","X-EXCLAIMER-MD-CONFIG":"e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180","Cc":"u-boot@lists.denx.de","Subject":"[U-Boot] [PATCH v2 14/26] mmc: Add a new callback function to\n\tperform the 74 clocks cycle sequence","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.18","Precedence":"list","List-Id":"U-Boot discussion ","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"base64","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" "},"content":"Add a new callback function *send_init_stream* which start a sequence of\nat least 74 clock cycles.\nThe mmc core uses *mmc_send_init_stream* in order to invoke the callback\nfunction. This will be used during power cycle where the specification\nrequires such a sequence after power up.\n\nSigned-off-by: Jean-Jacques Hiblot \n---\n drivers/mmc/mmc-uclass.c | 13 +++++++++++++\n drivers/mmc/mmc.c | 6 ++++++\n include/mmc.h | 10 ++++++++++\n 3 files changed, 29 insertions(+)","diff":"diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c\nindex 5dda20c..9c6a8ba 100644\n--- a/drivers/mmc/mmc-uclass.c\n+++ b/drivers/mmc/mmc-uclass.c\n@@ -51,6 +51,19 @@ int mmc_set_ios(struct mmc *mmc)\n \treturn dm_mmc_set_ios(mmc->dev);\n }\n \n+void dm_mmc_send_init_stream(struct udevice *dev)\n+{\n+\tstruct dm_mmc_ops *ops = mmc_get_ops(dev);\n+\n+\tif (ops->send_init_stream)\n+\t\tops->send_init_stream(dev);\n+}\n+\n+void mmc_send_init_stream(struct mmc *mmc)\n+{\n+\tdm_mmc_send_init_stream(mmc->dev);\n+}\n+\n int dm_mmc_get_wp(struct udevice *dev)\n {\n \tstruct dm_mmc_ops *ops = mmc_get_ops(dev);\ndiff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c\nindex 46ec5e1..fd93691 100644\n--- a/drivers/mmc/mmc.c\n+++ b/drivers/mmc/mmc.c\n@@ -1198,6 +1198,10 @@ static inline int bus_width(uint cap)\n }\n \n #if !CONFIG_IS_ENABLED(DM_MMC)\n+static void mmc_send_init_stream(struct mmc *mmc)\n+{\n+}\n+\n static int mmc_set_ios(struct mmc *mmc)\n {\n \tint ret = 0;\n@@ -1983,6 +1987,8 @@ int mmc_start_init(struct mmc *mmc)\n \tmmc_set_bus_width(mmc, 1);\n \tmmc_set_clock(mmc, 1);\n \n+\tmmc_send_init_stream(mmc);\n+\n \t/* Reset the Card */\n \terr = mmc_go_idle(mmc);\n \ndiff --git a/include/mmc.h b/include/mmc.h\nindex e524963..bd096ae 100644\n--- a/include/mmc.h\n+++ b/include/mmc.h\n@@ -361,6 +361,14 @@ struct dm_mmc_ops {\n \tint (*set_ios)(struct udevice *dev);\n \n \t/**\n+\t * send_init_stream() - send the initialization stream: 74 clock cycles\n+\t * This is used after power up before sending the first command\n+\t *\n+\t * @dev:\tDevice to update\n+\t */\n+\tvoid (*send_init_stream)(struct udevice *dev);\n+\n+\t/**\n \t * get_cd() - See whether a card is present\n \t *\n \t * @dev:\tDevice to check\n@@ -382,11 +390,13 @@ struct dm_mmc_ops {\n int dm_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,\n \t\t struct mmc_data *data);\n int dm_mmc_set_ios(struct udevice *dev);\n+void dm_mmc_send_init_stream(struct udevice *dev);\n int dm_mmc_get_cd(struct udevice *dev);\n int dm_mmc_get_wp(struct udevice *dev);\n \n /* Transition functions for compatibility */\n int mmc_set_ios(struct mmc *mmc);\n+void mmc_send_init_stream(struct mmc *mmc);\n int mmc_getcd(struct mmc *mmc);\n int mmc_getwp(struct mmc *mmc);\n \n","prefixes":["U-Boot","v2","14/26"]}