From: Marc Kleine-Budde <mkl@pengutronix.de>
To: Markus Schneider-Pargmann <msp@baylibre.com>
Cc: Chandrasekar Ramakrishnan <rcsekar@samsung.com>,
Wolfgang Grandegger <wg@grandegger.com>,
linux-can@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 11/11] can: tcan4x5x: Specify separate read/write ranges
Date: Tue, 6 Dec 2022 17:20:01 +0100 [thread overview]
Message-ID: <20221206162001.3cgtod46h5d5j7fx@pengutronix.de> (raw)
In-Reply-To: <20221206115728.1056014-12-msp@baylibre.com>
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On 06.12.2022 12:57:28, Markus Schneider-Pargmann wrote:
> Specify exactly which registers are read/writeable in the chip. This
> is supposed to help detect any violations in the future.
>
> Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
> ---
> drivers/net/can/m_can/tcan4x5x-regmap.c | 43 +++++++++++++++++++++----
> 1 file changed, 37 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/net/can/m_can/tcan4x5x-regmap.c b/drivers/net/can/m_can/tcan4x5x-regmap.c
> index 33aed989e42a..2b218ce04e9f 100644
> --- a/drivers/net/can/m_can/tcan4x5x-regmap.c
> +++ b/drivers/net/can/m_can/tcan4x5x-regmap.c
> @@ -90,16 +90,47 @@ static int tcan4x5x_regmap_read(void *context,
> return 0;
> }
>
> -static const struct regmap_range tcan4x5x_reg_table_yes_range[] = {
> +static const struct regmap_range tcan4x5x_reg_table_wr_range[] = {
> + /* Device ID and SPI Registers */
> + regmap_reg_range(0x000c, 0x0010),
According to "Table 8-8" 0xc is RO, but in "8.6.1.4 Status (address =
h000C) [reset = h0000000U]" it clearly says it has write 1 to clear bits
:/.
> + /* Device configuration registers and Interrupt Flags*/
> + regmap_reg_range(0x0800, 0x080c),
> + regmap_reg_range(0x0814, 0x0814),
0x814 is marked as reserved in "SLLSEZ5D – JANUARY 2018 – REVISED JUNE
2022"?
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
Vertretung West/Dortmund | Phone: +49-231-2826-924 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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next prev parent reply other threads:[~2022-12-06 16:21 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-06 11:57 [PATCH v2 00/11] can: m_can: Optimizations for tcan and peripheral chips Markus Schneider-Pargmann
2022-12-06 11:57 ` [PATCH v2 01/11] can: m_can: Eliminate double read of TXFQS in tx_handler Markus Schneider-Pargmann
2022-12-06 11:57 ` [PATCH v2 02/11] can: m_can: Avoid reading irqstatus twice Markus Schneider-Pargmann
2022-12-06 11:57 ` [PATCH v2 03/11] can: m_can: Read register PSR only on error Markus Schneider-Pargmann
2022-12-06 11:57 ` [PATCH v2 04/11] can: m_can: Count TXE FIFO getidx in the driver Markus Schneider-Pargmann
2022-12-06 11:57 ` [PATCH v2 05/11] can: m_can: Count read getindex " Markus Schneider-Pargmann
2022-12-06 11:57 ` [PATCH v2 06/11] can: m_can: Batch acknowledge transmit events Markus Schneider-Pargmann
2022-12-06 11:57 ` [PATCH v2 07/11] can: m_can: Batch acknowledge rx fifo Markus Schneider-Pargmann
2022-12-06 11:57 ` [PATCH v2 08/11] can: tcan4x5x: Remove invalid write in clear_interrupts Markus Schneider-Pargmann
2022-12-06 11:57 ` [PATCH v2 09/11] can: tcan4x5x: Fix use of register error status mask Markus Schneider-Pargmann
2022-12-06 11:57 ` [PATCH v2 10/11] can: tcan4x5x: Fix register range of first two blocks Markus Schneider-Pargmann
2022-12-06 11:57 ` [PATCH v2 11/11] can: tcan4x5x: Specify separate read/write ranges Markus Schneider-Pargmann
2022-12-06 16:20 ` Marc Kleine-Budde [this message]
2022-12-12 10:54 ` Marc Kleine-Budde
2022-12-13 17:10 ` Markus Schneider-Pargmann
2022-12-13 19:10 ` Markus Schneider-Pargmann
2022-12-13 19:13 ` Marc Kleine-Budde
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