rt-thread.git/components/drivers/sdio/mmc.c, branch v4.0.3Unnamed repository; edit this file 'description' to name the repository.http://cgit.235523.xyz/rt-thread.git/atom/components/drivers/sdio/mmc.c?h=v4.0.32020-03-16T06:45:41Zcomponent: sdio: fix potential ricky clock setting2020-03-16T06:45:41ZShawn Linshawn.lin@rock-chips.com2020-03-16T06:45:41Zurn:sha1:4c7106fa9d5871c6402c9a4f336504c9f1f78b60
Currently RTT mmc stack only support Highspeed mode or
blow, which means the max speed should be 52MHz according
to JEDEC spec. Two problems show here:
(1) max_data_rate = (unsigned int)-1. The value of unsigned int
depends on compilers/arch. Moreover, it makes no sense to assume
cpu addressing width with IP clock rate limit.
(1)hs_max_data_rate was set to 200MHz.
So what should BSP drivers do if 52MHz < max_data_rate < 200MHz?
Either it blindly sets a spec-violated clock rate to drive a Highspeed
card, or just adjust the clock rate internally. Both cases are
really bad for practice.
If the card claims to support Highspeed, we set the clock to not
to exceed 52MHz. Otherwise it should be set according to
card->max_data_rate parsed by ext_csd. This patch fixes it as-is,
and also simplify the code a lot.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
[Components] sdio: try bus width depends on host's capability2020-03-12T01:00:41ZShawn Linshawn.lin@rock-chips.com2020-03-12T00:52:56Zurn:sha1:11277014a3361a67e5f939f58aa0540f2016cc02
It makes no sense to try bus width if not supported by drivers or BSP,
since we know it must be failed. It saves a lot for booting in time
critical environment.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
sdio: mmc.c: 修复缩进/Fix indentation.2019-07-19T13:18:56ZZhou Yanjiezhouyanjie@zoho.com2019-07-19T08:46:14Zurn:sha1:de69a9b5003a77923a0dc7ecb4dd21c48248419a
修复版权信息中的缩进格式。
Fix indentation in copyright information.
Signed-off-by: Zhou Yanjie <zhouyanjie@zoho.com>
sdio: mmc.c: 防止容量计算过程溢出/Prevent capacity calculation overflow.2019-07-19T13:18:56ZZhou Yanjiezhouyanjie@zoho.com2019-07-18T11:57:02Zurn:sha1:976ea2411261287b605e39922bbde21d3f457045
修改“mmc_parse_ext_csd”函数，防止容量计算过程溢出。
Modify the "mmc_parse_ext_csd" function to prevent the capacity
calculation process from overflowing.
Signed-off-by: Zhou Yanjie <zhouyanjie@zoho.com>
Update all of debug log definition to DBG_TAG and DBG_LVL.2019-04-12T02:18:57Zarminkarmink.ztl@gmail.com2019-04-12T02:18:57Zurn:sha1:fa4d4ab7cf774ccb701d01a6fd1371ce8d9474e9Remove the DBG_COLOR and DBG_ENABLE definition.2019-03-06T09:54:30Zarminkarmink.ztl@gmail.com2019-03-06T09:07:15Zurn:sha1:0d7ba79219f939ad0dc55eb70872e11c950b0da8[components][DeviceDriver] Update log tag from [SDIO] to SDIO.2018-11-02T02:15:29Zarminkarmink.ztl@gmail.com2018-11-01T11:56:46Zurn:sha1:5a70247898dc681534c75d88fd3f188a63888080[license] Change license to Apache.2018-10-14T11:37:18ZBernard Xiongbernard.xiong@gmail.com2018-10-14T11:37:18Zurn:sha1:2c0640a17872cd0e2a4fc8dc8a301a77dae6cc0d[Components][SDIO]fix 'rocr' declared without an initial value2018-09-30T03:01:06ZZYHlymz@foxmail.com2018-09-22T07:05:05Zurn:sha1:2e74539130d41add6c729d231603ee2cb2e6729d[Components][SDIO][MMC] fix null point check2018-09-22T07:02:48ZZYHlymz@foxmail.com2018-09-22T07:02:48Zurn:sha1:780f538525637eaed5315c66ee1c52228c16b1d6