From: Simon Horman <horms@verge.net.au>
To: linux-renesas-soc@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
Magnus Damm <magnus.damm@gmail.com>
Subject: Re: [PATCH] arm64: dts: renesas: r8a77990: ebisu: Enable HS400 of SDHI3
Date: Thu, 17 Jan 2019 14:54:06 +0100 [thread overview]
Message-ID: <20190117135406.kw2djf5iunq2ju25@verge.net.au> (raw)
In-Reply-To: <20190110142833.31577-1-horms+renesas@verge.net.au>
On Thu, Jan 10, 2019 at 03:28:33PM +0100, Simon Horman wrote:
> Add SDHI3 UHS pin control and use it when enabling HS200 support
> for SDHI3.
>
> Based on work by Takeshi Kihara.
>
> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
> ---
> Tested on top of renesas-devel-20190110-v5.0-rc1
>
> [ 2.967136] renesas_sdhi_internal_dmac ee160000.sd: mmc0 base at 0xee160000 max clock rate 200 MHz
> [ 3.055659] mmc0: new HS400 MMC card at address 0001
> [ 3.061726] mmcblk0: mmc0:0001 BGSD3R 29.1 GiB
> [ 3.070827] mmcblk0boot0: mmc0:0001 BGSD3R partition 1 16.0 MiB
> [ 3.077508] mmcblk0boot1: mmc0:0001 BGSD3R partition 2 16.0 MiB
> [ 3.084132] mmcblk0rpmb: mmc0:0001 BGSD3R partition 3 4.00 MiB, chardev (243:0)
> [ 2.967136] renesas_sdhi_internal_dmac ee160000.sd: mmc0 base at 0xee160000 max clock rate 200 MHz
> [ 3.055659] mmc0: new HS400 MMC card at address 0001
> [ 3.061726] mmcblk0: mmc0:0001 BGSD3R 29.1 GiB
> [ 3.070827] mmcblk0boot0: mmc0:0001 BGSD3R partition 1 16.0 MiB
> [ 3.077508] mmcblk0boot1: mmc0:0001 BGSD3R partition 2 16.0 MiB
> [ 3.084132] mmcblk0rpmb: mmc0:0001 BGSD3R partition 3 4.00 MiB, chardev (243:0)
>
> [ 2.901527] renesas_sdhi_internal_dmac ee160000.sd: Linked as a consumer to regulator.2
> [ 2.909824] renesas_sdhi_internal_dmac ee160000.sd: Linked as a consumer to regulator.1
> [ 2.967136] renesas_sdhi_internal_dmac ee160000.sd: mmc0 base at 0xee160000 max clock rate 200 MHz
> [ 3.055659] mmc0: new HS400 MMC card at address 0001
> [ 3.061726] mmcblk0: mmc0:0001 BGSD3R 29.1 GiB
> [ 3.070827] mmcblk0boot0: mmc0:0001 BGSD3R partition 1 16.0 MiB
> [ 3.077508] mmcblk0boot1: mmc0:0001 BGSD3R partition 2 16.0 MiB
> [ 3.084132] mmcblk0rpmb: mmc0:0001 BGSD3R partition 3 4.00 MiB, chardev (243:0)
I see the command lines for the tests were omitted below.
I have added them, for the record.
# dd if=/dev/mmcblk0 of=/dev/null bs=1M count=128 iflag=direct
> 128+0 records in
> 128+0 records out
> 134217728 bytes (134 MB) copied, 0.92438 s, 145 MB/s
# dd if=/dev/mmcblk0 of=/dev/null bs=1M count=512 iflag=direct
> 512+0 records in
> 512+0 records out
> 536870912 bytes (537 MB) copied, 9.02486 s, 59.5 MB/s
# dd if=/dev/mmcblk0 of=/dev/null bs=1M count=512 iflag=direct
> 512+0 records in
> 512+0 records out
> 536870912 bytes (537 MB) copied, 7.36003 s, 72.9 MB/s
# dd if=/dev/mmcblk0 of=/dev/null bs=1M count=512 iflag=direct
> 512+0 records in
> 512+0 records out
> 536870912 bytes (537 MB) copied, 11.0156 s, 48.7 MB/s
>
# dd of=/dev/mmcblk0 if=/dev/zero bs=1M count=512 oflag=direct
> 512+0 records in
> 512+0 records out
> 536870912 bytes (537 MB) copied, 7.15907 s, 75.0 MB/s
# dd of=/dev/mmcblk0 if=/dev/zero bs=1M count=512 oflag=direct
> 512+0 records in
> 512+0 records out
> 536870912 bytes (537 MB) copied, 8.78869 s, 61.1 MB/s
# dd of=/dev/mmcblk0 if=/dev/zero bs=1M count=512 oflag=direct
> 512+0 records in
> 512+0 records out
> 536870912 bytes (537 MB) copied, 10.3861 s, 51.7 MB/s
>
> The above test results seem favourable when compared to
> testing against renesas-devel-20190110-v5.0-rc1 where the eMMC
> device uses HS200 mode.
>
# dd if=/dev/mmcblk0 of=/dev/null bs=1M count=512 iflag=direct
> 512+0 records in
> 512+0 records out
> 536870912 bytes (537 MB) copied, 14.7343 s, 36.4 MB/s
# dd if=/dev/mmcblk0 of=/dev/null bs=1M count=512 iflag=direct
> 512+0 records in
> 512+0 records out
> 536870912 bytes (537 MB) copied, 8.46809 s, 63.4 MB/s
# dd if=/dev/mmcblk0 of=/dev/null bs=1M count=512 iflag=direct
> 512+0 records in
> 512+0 records out
> 536870912 bytes (537 MB) copied, 14.6945 s, 36.5 MB/s
>
# dd of=/dev/mmcblk0 if=/dev/zero bs=1M count=512 oflag=direct
> 512+0 records in
> 512+0 records out
> 536870912 bytes (537 MB) copied, 19.1677 s, 28.0 MB/s
# dd of=/dev/mmcblk0 if=/dev/zero bs=1M count=512 oflag=direct
> 512+0 records in
> 512+0 records out
> 536870912 bytes (537 MB) copied, 21.3139 s, 25.2 MB/s
# dd of=/dev/mmcblk0 if=/dev/zero bs=1M count=512 oflag=direct
> 512+0 records in
> 512+0 records out
> 536870912 bytes (537 MB) copied, 19.9205 s, 27.0 MB/s
> ---
> arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts b/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
> index 89383aa35d65..f2846c9eb83f 100644
> --- a/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
> +++ b/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
> @@ -535,6 +535,12 @@
> power-source = <1800>;
> };
>
> + sdhi3_pins_uhs: sd3_uhs {
> + groups = "sdhi3_data8", "sdhi3_ctrl", "sdhi3_ds";
> + function = "sdhi3";
> + power-source = <1800>;
> + };
> +
> sound_pins: sound {
> groups = "ssi01239_ctrl", "ssi0_data", "ssi1_data";
> function = "ssi";
> @@ -689,12 +695,13 @@
> &sdhi3 {
> /* used for on-board 8bit eMMC */
> pinctrl-0 = <&sdhi3_pins>;
> - pinctrl-1 = <&sdhi3_pins>;
> + pinctrl-1 = <&sdhi3_pins_uhs>;
> pinctrl-names = "default", "state_uhs";
>
> vmmc-supply = <®_3p3v>;
> vqmmc-supply = <®_1p8v>;
> mmc-hs200-1_8v;
> + mmc-hs400-1_8v;
> bus-width = <8>;
> non-removable;
> status = "okay";
> --
> 2.11.0
>
prev parent reply other threads:[~2019-01-17 13:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-10 14:28 [PATCH] arm64: dts: renesas: r8a77990: ebisu: Enable HS400 of SDHI3 Simon Horman
2019-01-17 13:32 ` Simon Horman
2019-01-17 14:18 ` Wolfram Sang
2019-01-17 14:38 ` Simon Horman
2019-01-17 13:54 ` Simon Horman [this message]
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